Firmware 1.3 better audio performance

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Manu Gil

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Re: Firmware 1.3 better audio performance

PostThu Apr 25, 2013 5:38 pm

cecchand wrote:Hi Tom, I'm reluctant to upgrade the firmware even though I hate DC-offset and I will to do in the next time.
But one time you update then we lose the out progressive?
thx

Yes
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostThu Apr 25, 2013 8:37 pm

Wow - this is very cool, if it has indeed been fixed!

I've been doing lots of audio tests over the last week or so - so I can't wait to do the same tests with this newer firmware! Hopefully it actually makes a difference!

Like others here, I was reluctant to upgrade, as I don't want to loose the progressive SDI output. But if it fixes the audio, I think it's worth the interlaced feed!

Typical... instead of just fixing the problem, BMD has reinstated the old battle between sound recordist and camera assistant!
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:25 am

I've just done some tests:

BMC (Running 1.2)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "factory default" tone (1kHz tone at 0dBu) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_line_tone.png
ultrascope_76_line_tone.png (604.08 KiB) Viewed 25380 times


Media Express 3.2
mediaexpress_76_line_tone.png
mediaexpress_76_line_tone.png (609.77 KiB) Viewed 25380 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_line_tone.png
audition_76_line_tone.png (179.44 KiB) Viewed 25380 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:30 am

BMC (Running 1.2)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "full scale" tone (i.e. clipping level) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_line_fulltone.png
ultrascope_76_line_fulltone.png (609.3 KiB) Viewed 25379 times


Media Express 3.2
mediaexpress_76_line_fulltone.png
mediaexpress_76_line_fulltone.png (608.02 KiB) Viewed 25379 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_line_fulltone.png
audition_76_line_fulltone.png (183.11 KiB) Viewed 25379 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:42 am

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "factory default" tone (1kHz tone at 0dBu) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_line_tone.png
ultrascope_76_line_tone.png (664.48 KiB) Viewed 25378 times


Media Express 3.2
mediaexpress_76_line_tone.png
mediaexpress_76_line_tone.png (605.12 KiB) Viewed 25378 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_line_tone.png
audition_76_line_tone.png (178.05 KiB) Viewed 25378 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:45 am

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "full scale" tone (i.e. clipping level) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_line_fulltone.png
ultrascope_76_line_fulltone.png (611.47 KiB) Viewed 25378 times


Media Express 3.2
mediaexpress_76_line_fulltone.png
mediaexpress_76_line_fulltone.png (604.86 KiB) Viewed 25378 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_line_fulltone.png
audition_76_line_fulltone.png (184.35 KiB) Viewed 25378 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:50 am

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 100%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 100%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "factory default" tone (1kHz tone at 0dBu) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_100_line_tone.png
ultrascope_100_line_tone.png (610.62 KiB) Viewed 25378 times


Media Express 3.2
mediaexpress_100_line_tone.png
mediaexpress_100_line_tone.png (612.15 KiB) Viewed 25378 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_100_line_tone.png
audition_100_line_tone.png (178.92 KiB) Viewed 25378 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:54 am

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Line
Ch 1 Input: 100%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 100%
Headphone Volume: 100%

302
XLR Atten. Level: 0dB
Everything else is factory default.

When sending out "full scale" tone (i.e. clipping level) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_100_line_fulltone.png
ultrascope_100_line_fulltone.png (611.21 KiB) Viewed 25378 times


Media Express 3.2
mediaexpress_100_line_fulltone.png
mediaexpress_100_line_fulltone.png (615.22 KiB) Viewed 25378 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_100_line_fulltone.png
audition_100_line_fulltone.png (184.27 KiB) Viewed 25378 times
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MikeC

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 6:40 am

So... 1.3 has less white noise? Sorry, I'm totally audio challenged, I have no idea what those tests above mean!

:oops:
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 6:54 am

Tom wrote:So, here is my current theory (if anyone knows better, specifically someone from BMD - please correct me)

100% = 0 Gain, 0 Attenuation.
80% = 0 Gain, -20% Attenuation.
50% = 0Gain, -50% Attenuation


This is exactly what I'm seeing. Using the 1.3 Firmware, if you set the Input Level to 100% on the camera, and set the Ch 1 and Ch2 Input Levels to Line - you're essentially getting 0dB gain and 0dB attenuation, which is FANTASTIC news! The DC Offset is also fixed.

I'm still doing some more detailed tests - so will come back with my findings soon.

But yes, I can definitely confirm that BMD has revised the audio functionality on this new firmware - and so far, it looks like it's vastly improved.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 7:41 am

Here's another quick test, this time using Mic Level instead of Line Level.

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Mic
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: -40 dB
Everything else is factory default.

When sending out "factory default" tone (1kHz tone at 0dBu) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_mic_tone.png
ultrascope_76_mic_tone.png (605.51 KiB) Viewed 25698 times


Media Express 3.2
mediaexpress_76_mic_tone.png
mediaexpress_76_mic_tone.png (610.46 KiB) Viewed 25698 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_mic_tone.png
audition_76_mic_tone.png (172.85 KiB) Viewed 25698 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 7:45 am

BMC (Running 1.3)
Microphone Input: 0%
Ch 1 and Ch 2 Input Levels: Mic
Ch 1 Input: 76%
Ch 2 uses Ch 1 Input: Off
Ch 2 Input: 76%
Headphone Volume: 100%

302
XLR Atten. Level: -40dB
Everything else is factory default.

When sending out "full scale" tone (i.e. clipping level) from the 302 I get the following...

UltraScope 1.6.3
ultrascope_76_mic_fullscale.png
ultrascope_76_mic_fullscale.png (611.02 KiB) Viewed 25698 times


Media Express 3.2
mediaexpress_76_mic_fullscale.png
mediaexpress_76_mic_fullscale.png (604.77 KiB) Viewed 25698 times


Adobe Audition 5.0.2 - Captured from Media Express
audition_76_mic_fullscale.png
audition_76_mic_fullscale.png (181.18 KiB) Viewed 25698 times
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Milen Mladenov

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 8:12 am

Manu Gil wrote:
cecchand wrote:Hi Tom, I'm reluctant to upgrade the firmware even though I hate DC-offset and I will to do in the next time.
But one time you update then we lose the out progressive?
thx

Yes


From what I understand you don't lose progressive, you can switch to interlaced!
viewtopic.php?f=2&t=7247

Cheers,
Milen
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 8:20 am

For anyone who's interested, I just did some tests comparing Mic Level and Line Level.

For the Line Level tests, I used 100% on the camera and 0dB on the 302.

For the Mic Level tests, I used 76% on the camera and -40dB on the 302.

In both cases, I ran Full Tone from the 302, then exited out of the Setup Menu, switching it automatically to Standard Tone, then turned off Tone all together (where all of the Gain/Volume Pots were fully turned to the Left).

The files below are straight off the camera when recording in RAW 2.5K mode. I disconnected our external battery, SDI cables and headphones when doing this test - just incase they made a difference at all.

You can download the Mic test here: http://www.filedropper.com/mic
You can download the Line test here: http://www.filedropper.com/line

As you can hear, there is still a fair bit of noise on both examples. However, without anything to really compare it to at the moment, I'm not sure if this is a good or bad result.

If anyone has access to a higher quality mixer/recorder - I'd love to hear some comparisons.

One thing I haven't mentioned is that I'm now using a multi-core loom from the 302 to the camera - it's 2 x XLR, and 1 x Male 3.5 mm Headphone Return on the 302 side, with a 7-pin XLR on the camera end, connected to a breakout cable which has a Male 3.5mm for the Headphone Jack, and 2 x Right-Angle 1/4inch TRS Jacks that fit perfectly into the camera. I've tested it all - and the cabling is all wired correctly.

Any questions, let me know!

Chris!
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 8:34 am

Milen Mladenov wrote:From what I understand you don't lose progressive, you can switch to interlaced!


SDI outputs interlaced video when frame rate is set to 1080p25 or 1080p29.97 and overlays are turned off.

If you turn overlays on - then the output is progressive again.

However, to be perfectly honest - I have a SmallHD AC7 hooked up to the camera, and I can't really notice any difference between SDI Overlays set to Off versus Status. The AC7 doesn't actually tell you what kind of signal it's getting - so I'm not sure if it's PsF or not. Next time I have a chance, I'll hook it up to a broadcast monitor and see what the SDI signal ACTUALLY is.
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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 12:08 pm

This may be of interest... http://www.sounddevices.com/notes/cameras/red-one/

Its a summary of a test done by the sound devices guys with the Red camera.

If anyone with a camera is close to them, maybe sound devices would test the BMCC as well.
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Manu Gil

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 1:10 pm

Milen Mladenov wrote:
Manu Gil wrote:
cecchand wrote:Hi Tom, I'm reluctant to upgrade the firmware even though I hate DC-offset and I will to do in the next time.
But one time you update then we lose the out progressive?
thx

Yes


From what I understand you don't lose progressive, you can switch to interlaced!
viewtopic.php?f=2&t=7247

Cheers,
Milen

If you selet clean out, only "i" V1.3
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 3:02 pm

DavidCox wrote:If anyone with a camera is close to them, maybe sound devices would test the BMCC as well.


I've been chatting with the Sound Devices team over the last week about trying to get the best performance out of the BMC - and I'm sure if someone nearby could loan them a camera for a day, they'd love to have a play!
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sean mclennan

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 5:27 pm

Manu Gil wrote:
Milen Mladenov wrote:
From what I understand you don't lose progressive, you can switch to interlaced!
viewtopic.php?f=2&t=7247

Cheers,
Milen

If you selet clean out, only "i" V1.3


No, only i if you select clean AND 25 or 29.97....if you're on 24 or 23.98, still progressive
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ChrisBarcellos

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Re: Firmware 1.3 better audio performance

PostFri Apr 26, 2013 5:44 pm

Can anyone from Black Magic confirm that changes have been made to the audio handling of the camera system ? Surely, this would have been reported in the upgrade notes. All that is shown is:

What's New

• SDI outputs interlaced video when frame rate is set to 1080p25 or 1080p29.97 and overlays are turned off
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 12:22 am

I can tell you 100% that the changes have been made - just look at the test results!

Why they decided to keep it quiet, I have absolutely no idea.

It's very Apple-like - never admit your mistakes, and the DC offset was a bug that should have never been there in the first place.
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bhook

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 12:26 am

Maybe now we will see VUs?
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 1:22 am

Yes, I'd say in the next firmware release there will definitely be meters.

However, personally I don't see it as a huge priority. To get good audio you NEED an external mixer/pre-amp, and given the camera comes with UltraScopes you can calibrate with that, and you're good to go!

Few people will be monitoring off the back of the screen anyway, so most people will be using a 3rd Party monitor or EVF - just get one with meters.

Now that the line input settings are logical, I'm pretty happy. The camera is finally truly useable.

I am wondering though if the noise level can be improved in firmware, or whether it's a hardware limitation.

Personally, my biggest firmware priorities are drive space indicator, auto focus, and timecode.

I can live without audio meters, better battery meters and drive formatting.

In fact, I do really like the fact that the BMC is so simple with so little menus. Keeps things simple and streamlined. If I need something with a billion menus and ultimate flexibility, I'd get a RED.
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DGFilms

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 4:48 am

Chris Hocking wrote:Personally, my biggest firmware priorities are drive space indicator, auto focus, and timecode.

I can live without audio meters, better battery meters and drive formatting.

In fact, I do really like the fact that the BMC is so simple with so little menus. Keeps things simple and streamlined. If I need something with a billion menus and ultimate flexibility, I'd get a RED.


I would agree that drive space indicator, auto focus, and time code are needed, Internal Battery meter, I could care a less since we all know you need a good external battery solution, but I disagree about audio meters, since this is a fairly simple firmware (GUI) upgrade, But I would trade audio meters for drive formatting / Clip Deletion any day since I would be recording professional Audio/Sound as anyone should for a paid gig, The cameras audio would just be needed for sync if that, nothing more.
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Peter J. DeCrescenzo

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 5:13 am

mhood wrote:Maybe now we will see VUs?


+1,000!

I can shoot high-quality audio & video in-camera and with confidence if there are VU or audio peaking indicators on the camera's built-in LCD screen.

I can shoot high-quality audio & video in-camera and with confidence without being able to format the SSD in-camera, without being able to delete files in-camera, and (sometimes) without knowing record time remaining, and without being able to do a lot of other things in-camera.

But I can't reliably record high-quality audio & video in-camera (if there aren't VU or audio peaking indicators on the LCD) -- unless I connect a crap-load of external hardware such as a mixer, or T-Bolt equipped laptop running UltraScope, or a external EVF/monitor w. on-screen VUs, etc.

It's one thing to require people to use external hardware if it's physically difficult or impossible to add some functionality in-camera via a firmware update, but I'm not convinced that's the case with VUs/audio peaking indicators on the BMCC's LCD. I believe adding VUs/audio peaking indicators is a relatively simple software feature to add to the BMCC, but I could be wrong.

Just because some users don't need VUs/audio peaking indicators on the LCD doesn't mean it isn't an important, basic function which should be standard in any video camera presented as a professional piece of gear. Maybe there's an exception, but I don't know of any other pro video camera that doesn't include this feature.

Hopefully it'll be added to BMD camera firmware soon. Very soon.

Cheers.
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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 5:23 am

Peter J. DeCrescenzo wrote:
mhood wrote:Maybe now we will see VUs?


+1,000!

but I don't know of any other pro video camera that doesn't include this feature.



You just found one the BMCC, I'm not an audio or sound guy, all my work they have hired them,
So yes I don't have much interest in sound or audio as a DP, It is just as important and I'm not denying that, It's just not something I worry about unless I'm doing a low budget run&gun one man band gig and the budget is does not allow for a professional sound guy, So to for that reason I want it also, But I would still trade it for " per clip deletion" since a 480GB SSD is not enough for re shoots etc, and Many EVF's and Monitors have VU meters built in, or third party mixers.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 5:34 am

I can shoot high-quality audio & video in-camera and with confidence if there are VU or audio peaking indicators on the camera's built-in LCD screen.


I guess it all depends on how they implement it.

Personally, I think there's very little point having audio meters, if you need to enter the menu to adjust the volume using those HORRIBLE level controls (it's so hard to easily adjust the level by single increments).

I'd much rather attach an external mixer/pre-amp to the camera, than have to use the touch screen to adjust levels if I'm running solo.

Don't get me wrong... I think it would be AMAZING to have meters - and from what I've heard, this functionality is coming VERY soon - but from a practical point of view, for me at least, I use the meters (via UltraScope) initially to set the gain structure for an external device, and then leave the camera's audio menu alone.

If the camera had the ability to quickly and easily adjust levels on the fly - without any of the current "clicks" when you adjust the Mic Level gain - then I would feel completely different about the matter. But at the moment, you can't really adjust the audio "on the fly", and if you're operating solo, clicking the touch screen mid-shot is pretty impractical anyway.

So again, I think it would be extremely handy to have this functionality, and I'm positive it's coming soon - but if I had a choice, I'd rather they remove the "automatically switch from Mic to Line Level when signal is too hot" - and a bunch of other annoyances first. It's just a matter of priority I guess!

If they do release meters in the next firmware, I just really hope you'll be able to view them via the SDI output overlays!

But I would still trade it for " per clip deletion" since a 480GB SSD is not enough for re shoots etc, and Many EVF's and Monitors have VU meters built in, or third party mixers.


Personally... I wouldn't. Almost everyone will probably disagree with me, but I actually really like the fact that you can't format or delete clips on the camera. It makes it idiot proof.

Auto-focus is might biggest wish. I wonder if we'll ever see it?
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DGFilms

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 5:44 am

Chris Hocking wrote:
I can shoot high-quality audio & video in-camera and with confidence if there are VU or audio peaking indicators on the camera's built-in LCD screen.


I guess it all depends on how they implement it.

Personally, I think there's very little point having audio meters, if you need to enter the menu to adjust the volume using those HORRIBLE level controls (it's so hard to easily adjust the level by single increments).

I'd much rather attach an external mixer/pre-amp to the camera, than have to use the touch screen to adjust levels if I'm running solo.

Don't get me wrong... I think it would be AMAZING to have meters - and from what I've heard, this functionality is coming VERY soon - but from a practical point of view, for me at least, I use the meters (via UltraScope) initially to set the gain structure for an external device, and then leave the camera's audio menu alone.

If the camera had the ability to quickly and easily adjust levels on the fly - without any of the current "clicks" when you adjust the Mic Level gain - then I would feel completely different about the matter. But at the moment, you can't really adjust the audio "on the fly", and if you're operating solo, clicking the touch screen mid-shot is pretty impractical anyway.

So again, I think it would be extremely handy to have this functionality, and I'm positive it's coming soon - but if I had a choice, I'd rather they remove the "automatically switch from Mic to Line Level when signal is too hot" - and a bunch of other annoyances first. It's just a matter of priority I guess!

If they do release meters in the next firmware, I just really hope you'll be able to view them via the SDI output overlays!

But I would still trade it for " per clip deletion" since a 480GB SSD is not enough for re shoots etc, and Many EVF's and Monitors have VU meters built in, or third party mixers.


Personally... I wouldn't. Almost everyone will probably disagree with me, but I actually really like the fact that you can't format or delete clips on the camera. It makes it idiot proof.

Auto-focus is might biggest wish. I wonder if we'll ever see it?


But it does not make an actor idiot proof, having a per clip deletion is needed, Just not yet until it's being used more for shorts/docs/and feature films lol then you will want this feature.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 5:52 am

Each to their own. We shot a short film with the BMC back in September last year, and it was never an issue. On a bigger scale shoot, personally, I'd rather the data wrangler or assistant editor make the call on what to delete, rather than the DOP.

I'd imagine adding this functionality will be really tricky as well - as it looks like the camera basically loads a whole set of different software when you change between DNxHD, ProRes and RAW (hence the reason why you can't play ProRes files when you're in DNxHD mode).

Who knows though... anything could happen, and BMD are obviously listening (even if they're not actually telling us what changes they're making!).
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DGFilms

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 6:12 am

Chris Hocking wrote:Each to their own. We shot a short film with the BMC back in September last year, and it was never an issue. On a bigger scale shoot, personally, I'd rather the data wrangler or assistant editor make the call on what to delete, rather than the DOP.

I'd imagine adding this functionality will be really tricky as well - as it looks like the camera basically loads a whole set of different software when you change between DNxHD, ProRes and RAW (hence the reason why you can't play ProRes files when you're in DNxHD mode).

Who knows though... anything could happen, and BMD are obviously listening (even if they're not actually telling us what changes they're making!).


Now that is a big issue, recording in one format then switching to another, Yes that will/would be an issue for per clip deletion.
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Peter J. DeCrescenzo

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 6:50 am

Chris Hocking wrote:... Auto-focus is might biggest wish. I wonder if we'll ever see it?


I doubt we'll see auto focus soon, if ever, on the current shipping/announced BMD cams.

I suspect it's for 2 reasons: It's not currently a high priority for BMD, and it's much more difficult to implement well than are most other features.

For example, DSLR and mirrorless still camera manufacturers fiercely compete in part based on the auto-focus capability of their cameras. They put huge efforts into developing technology to eke out ever more difficult to achieve improved AF performance. It's really really hard to do well.

But for a "cinema camera", although auto focus might be useful once in a while, it's nowhere near as important to job #1: Such as implementing lossless compressed RAW, or high-fidelity color science, and so forth.

My guess is we'll see VU meters in BMD cameras before auto focus ... but who knows, maybe they put auto focus in the Pocket Cinema Camera first.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:00 am

Peter J. DeCrescenzo wrote:My guess is we'll see VU meters in BMD cameras before auto focus ... but who knows, maybe they put auto focus in the Pocket Cinema Camera first.


Exactly... I think auto-focus makes a HUGE amount of sense for the Pocket Cinema Camera (especially considering it has an active mount) - and given that the firmware is uniform across all three cameras, I don't think auto-focus is that out of the question.

Given BMD has a huge inventory of patents in the telecine space - I'm sure they've got some focus algorithms up their sleeve.

On the current Blackmagic Cinema Camera (EF) unless you're using cine glass, or have a follow focus on your stills glass - focus is a pain if you're a solo operator. It would be great if you could just press the FOCUS button for a quick and dirty auto-focus, so that it can at least give you a starting point.

Time will tell I guess!

Either way, I think we'll definitely see audio meters first... Hopefully sometime within the next month or so!
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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:15 am

Auto focus is never gonna be like you are used to in traditional video cams. Witness the long struggle the maic lantern developers have had try to get there with the eos dslrs. It been reached to a degree, but in my experience dslr lens can't be programmed to act like traditional auto focusing.
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Audio meters for the camera are needed to assure in camera audio is not clipping . My initial audio testing indicates the camera will be capable of recording usable dialogue and if nothing else will be a decent backup in a dual recording set up.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:25 am

ChrisBarcellos wrote:Auto focus is never gonna be like you are used to in traditional video cams. Witness the long struggle the maic lantern developers have had try to get there with the eos dslrs. It been reached to a degree, but in my experience dslr lens can't be programmed to act like traditional auto focusing.


I agree - but I just want to be able to press the FOCUS button and for the camera to do it's best attempt (like my iPhone can). Doesn't have to be brilliant, just a handy starting point. If it can be done in a smart phone - I'm positive we'll see it in the camera soon enough.

ChrisBarcellos wrote:Audio meters for the camera are needed to assure in camera audio is not clipping . My initial audio testing indicates the camera will be capable of recording usable dialogue and if nothing else will be a decent backup in a dual recording set up.


I agree - but my argument is that to get useable audio, you need an external mixer/preamp. In this case you can set up your gain structure using UltraScopes, and you're good to go. It's set and forget.

I think meters on the camera only work if you can adjust levels on the camera with ease. If they add meters, and the ability to "tap" on the meters, and adjust the gain by simply sliding your finger, then problem solved!
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Trevor Zuck

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 8:03 am

You guys realize the camera probably doesn't have any sort of depth perception right? And would only be available on active mounts with active lenses. But if you don't have hardware to judge distance to the camera you kinda can't auto focus. You know how DSLRs have like 6, 18 or 61 focusing points? Those are used to judge focus, this camera looks at sharpness all over to tell you where it thinks its focusing.

If you take the camera and point it at a TV it will say its focused onto whatever is in focus in the shot on the TV, and not the TV itself.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 8:12 am

I just want it to act exactly like my iPhone - I tap the screen and it "finds" focus.

Yes, obviously this will only work with active mounts and active lenses - but given the BMC EF is the only camera currently out there in the wild (with the exception of a few beta cameras), this isn't really an issue. If they could make auto-focus work with the current BMC EF and Canon Lenses, I'd be happy.

Definitely not a show stopper - and for jobs where you have a follow focus and cine lenses, this feature would be redundant - but for everyday run and gun stuff, it would be really handy to have.
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Frank Glencairn

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 8:27 am

Chris Hocking wrote:If the camera had the ability to quickly and easily adjust levels on the fly - without any of the current "clicks" when you adjust the Mic Level gain



The "clicks" are gone since the new firmware.
https://sites.google.com/view/frankglencairn/home
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 8:56 am

The "clicks" are gone since the new firmware.


Interesting! I was sure I could still hear them with Mic Level when I did some tests - but maybe not.

I'll have to have another play on Monday.
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Graham Spice

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:00 pm

Chris Hocking wrote:One thing I haven't mentioned is that I'm now using a multi-core loom from the 302 to the camera - it's 2 x XLR, and 1 x Male 3.5 mm Headphone Return on the 302 side, with a 7-pin XLR on the camera end, connected to a breakout cable which has a Male 3.5mm for the Headphone Jack, and 2 x Right-Angle 1/4inch TRS Jacks that fit perfectly into the camera. I've tested it all - and the cabling is all wired correctly.

This interests me, Chris. Can you post an image of the custom cable you're using?
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adamroberts

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:15 pm

Graham Spice wrote:
Chris Hocking wrote:One thing I haven't mentioned is that I'm now using a multi-core loom from the 302 to the camera - it's 2 x XLR, and 1 x Male 3.5 mm Headphone Return on the 302 side, with a 7-pin XLR on the camera end, connected to a breakout cable which has a Male 3.5mm for the Headphone Jack, and 2 x Right-Angle 1/4inch TRS Jacks that fit perfectly into the camera. I've tested it all - and the cabling is all wired correctly.

This interests me, Chris. Can you post an image of the custom cable you're using?


I have a similar custom loom:
http://instagram.com/p/X_76pkNhUC/
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sean mclennan

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 7:31 pm

Being a pro photographer for 15 years I can tell you that in reality, Auto Focus sucks. The most advanced AF systems on the planet...that only have to focus for a single frame or series of small burst...FAIL occasionally. How can you depend on a system that might fail when you're shooting video/film? $50K takes...oops, need to reshoot, AF missed the shot.

This is why most cinema production is manual focus. You can count on the skill of a trained FP more than any type of automated AF.

I know it's a pain, but the best thing you can do is learn to focus on the fly and practice. That skill will never lose it's importance any time soon!
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Graham Spice

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Re: Firmware 1.3 better audio performance

PostSat Apr 27, 2013 8:18 pm

adamroberts wrote:I have a similar custom loom:
http://instagram.com/p/X_76pkNhUC/

Cool, thanks for posting.
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSun Apr 28, 2013 12:18 am

Graham Spice wrote:This interests me, Chris. Can you post an image of the custom cable you're using?


It's basically exactly the same as Adam's.

IMG_3226.JPG
IMG_3226.JPG (199.39 KiB) Viewed 6832 times


IMG_3227.JPG
IMG_3227.JPG (215.5 KiB) Viewed 6832 times
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Chris Hocking

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Re: Firmware 1.3 better audio performance

PostSun Apr 28, 2013 12:31 am

sean mclennan wrote:Being a pro photographer for 15 years I can tell you that in reality, Auto Focus sucks. The most advanced AF systems on the planet...that only have to focus for a single frame or series of small burst...FAIL occasionally. How can you depend on a system that might fail when you're shooting video/film? $50K takes...oops, need to reshoot, AF missed the shot.

This is why most cinema production is manual focus. You can count on the skill of a trained FP more than any type of automated AF.

I know it's a pain, but the best thing you can do is learn to focus on the fly and practice. That skill will never lose it's importance any time soon!


I completely understand - but you'd never use the FOCUS button for critical focus, it's more of a quick starting point.

If we were talking an Alexa or F55 obviously this wouldn't even be a discussion point. If you're shooting with a focus puller, or if you have a follow focus on the rig - again, it's not an issue. However, I'd imagine there will be a huge amount of people using these Blackmagic Camera's for run-and-gun documentary, home videos, school concerts, corporates, weddings, etc.

There's a reason why they included auto-focus on the RED Scarlet/EPIC - and it actually works really well. We use a EPIC + Canon stills EF glass all the time - and the auto-focus is incredibly handy for run-and-gun.

Would I use the FOCUS button every shot? Hell no. Would I use it on a documentary where I've only got a very small rig (i.e. no follow focus and Canon EF glass) something just unexpected happens and I just need to quickly start rolling? Hell yes.

It's just another tool for the job. If I had this option, then I would be able to get away with just pulling the focus straight off the Canon EF glass - rather than either "cine-fing" the lenses and using a proper follow focus, or strapping on a "temporary" follow focus.

My 2c. I'll stop banging on about it now! It is an audio thread after all!
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Nelson Villamil

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Re: Firmware 1.3 better audio performance

PostMon Apr 29, 2013 4:25 pm

To the development team.

- Format the SSD directly from camera. (Mac & ExFat) VERY IMPORTANT
- Be able to write labels the SSD (important for DIT, Data Wrangler, avoid overwriting errors).
- Remaining recording time in SSD (percentage or time options) and alarm display. VERY IMPORTANT
- VUs for audio. VERY IMPORTANT
- Remove clips directly from the camera.
- When playing the clips, the display information is for the clip (ASA, fps, # clip, etc), in version 1.1 shows the camera settings. the PLAY arrow could be green.
- Play any recorded clip. Whether you've recorded on the different options (Raw. ProRes, DNxHD), currently only played clips of current camera selection.
- If you record in RAW, with Film color. if change the Video, when I play previously recorded clips, they affect reproduction. In my personal opinion, I think that should not happen, or be optional.
- Possible to have transparency for the menu interface. in areas that do not have information, (solid gray, gray background I mean).
- Option to access by key combination to view the current firmware version and other information of the camera hardware and camera settings. (Ex. push STOP for 5 sec or push and hold STOP y next PLAY)
- Choice of different colors peaking
-White balance manual option (Ex. change in values ​​of 100ºK).
-More pictures. 48fps, 60 and more.
- Option to select the information superimposed on the screen, and the SDI output independently (Audio VU, TC, guides etc).
- Waveform, Histogram.
To use the USB port to copy the material (I know, it's so slow USB 2.0), but from experience can be an interesting and util option.


I will continue making suggestions.

Thank you very much.
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Re: Firmware 1.3 better audio performance

PostTue Apr 30, 2013 8:21 am

sean mclennan wrote:Being a pro photographer for 15 years I can tell you that in reality, Auto Focus sucks. The most advanced AF systems on the planet...that only have to focus for a single frame or series of small burst...FAIL occasionally. How can you depend on a system that might fail when you're shooting video/film? $50K takes...oops, need to reshoot, AF missed the shot.

This is why most cinema production is manual focus. You can count on the skill of a trained FP more than any type of automated AF.

I know it's a pain, but the best thing you can do is learn to focus on the fly and practice. That skill will never lose it's importance any time soon!


Agree 100% there is no such thing as auto focus for video, give that dream up, well not entirely just for a decade or more, it's going to take awhile before it's perfected in a camera! :mrgreen:

There is some still photography technology (having a brain fart) I can't remember who is doing it, that allows you in post to refocus your subjects, but it's a post effect and not real focus from the camera/lens and photographer, maybe this can come to light in video, but it's going to take a long time before it replaces a Fp.
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LDS

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Re: Firmware 1.3 better audio performance

PostTue Apr 30, 2013 4:49 pm

Based on the couple of hours that I spent testing audio with the latest firmware, you need to increase the gain in the camera to get a usable level. That, in turn, raises the amount of background hiss to a level that is not usable (in my opinion). If I had any hair, I'd be pulling it out right about now...
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Re: Firmware 1.3 better audio performance

PostTue Apr 30, 2013 4:53 pm

DGFilms wrote:there is no such thing as auto focus for video


Did you ever use a Sony TRV950 MiniDV? ;)
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Re: Firmware 1.3 better audio performance

PostTue Apr 30, 2013 6:47 pm

Robert Rozak from Juiced Link has now weighed in on the setting for the camera on firmware 1.3.
Seems to me from his review of current settings is that Black Magic Design engineers took a raw approach on resetting the camera, figuring that you will adjust sound in post just like you adjust the image.

http://www.dvinfo.net/forum/blackmagic- ... ost1793449
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Peter J. DeCrescenzo

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Re: Firmware 1.3 better audio performance

PostTue Apr 30, 2013 8:19 pm

ChrisBarcellos wrote:Robert Rozak from Juiced Link has now weighed in on the setting for the camera on firmware 1.3.
Seems to me from his review of current settings is that Black Magic Design engineers took a raw approach on resetting the camera, figuring that you will adjust sound in post just like you adjust the image.

http://www.dvinfo.net/forum/blackmagic- ... ost1793449


I agree with Robert Rozak that BMD made a mistake when they applied the steep low frequency roll-off curve to audio sources connected externally.

I agree with him that it makes sense for the camera to apply a hi-pass filter to the internal mic's audio because of that mic's close proximity to the camera's fan, but it makes no sense whatsoever for the camera to apply a hi-pass filter to all audio sources connected externally (unless BMD were to include a user preference "switch" for it on the touchscreen GUI).

Hopefully BMD will correct this audio issue ASAP in a subsequent firmware update.

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