EXPOSING URSA MINI PRO

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Fran Tormo

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EXPOSING URSA MINI PRO

PostWed Jul 18, 2018 11:53 am

Hi everybody there!
I´m trying to get a method to expose with my URSA mini pro
I´m trying to combine everything to yield a correct and nice at the same time exposure with all I got at hand
In order : light meter, false color ( camera ), waveform ( shogun Inferno )
Camera was white balance and 800 ISO. I found that the results of false color in camera and light meter Sekonic L-478DR at 250 ISO gives me the same stop in camera......yes,,,,that´s what works with all the three tools
I let here some pictures, feel free to critic and express what do you think is correct or not
First LOG
Attachments
LOGSCPS.png
Scopes
LOGSCPS.png (104.56 KiB) Viewed 5985 times
LOGFILM.png
Film
LOGFILM.png (402.68 KiB) Viewed 5985 times
LOG FSC.png
False color Film
LOG FSC.png (415.77 KiB) Viewed 5985 times
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostWed Jul 18, 2018 11:55 am

Later the LUT I created for my personal taste
Attachments
LUTSCPS.png
Scopes
LUTSCPS.png (136.14 KiB) Viewed 5915 times
LUTFSC.png
LUT False Color
LUTFSC.png (485 KiB) Viewed 5915 times
LUT.png
LUT
LUT.png (475.77 KiB) Viewed 5915 times
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostWed Jul 18, 2018 11:57 am

And a small White balance and light grade
Attachments
LUTWBGR.png
Final Image
LUTWBGR.png (504.47 KiB) Viewed 5915 times
LUTWBGCPS.png
Grade Scopes
LUTWBGCPS.png (154.51 KiB) Viewed 5915 times
LUTWBG.png
Grade False color
LUTWBG.png (464.07 KiB) Viewed 5915 times
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rick.lang

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EXPOSING URSA MINI PRO

PostWed Jul 18, 2018 7:23 pm

Fran, your False Colour shows yellow on her forehead and the image does appear to posterize. Considering the subject, I’d rely on False Colour and never go above Light Grey on that subject with that lighting.

I also set my Zebras to 90% to make sure I get an early warning of anything possibly going to prove problematic.


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Rick Lang
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostWed Jul 18, 2018 7:47 pm

Yes Rick, thanks for the advice
Buy this is the final image after the grade, I made a little bit yellow the forehead on purpose because is about make up that makes the skin shine, and this is the graded, I could avoid this easily. Anyway, I´m most interested on the Log image, how do you see it? You would consider it well exposed? I would, but I´m not very used yo work with URSA false color. What do you think about the LUT? I think that LUT maintain a good level of light. contrast and color.
Trying to yield a way to nail exposure and getting use to work with all my tools at hand.
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Denny Smith

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Re: EXPOSING URSA MINI PRO

PostThu Jul 19, 2018 12:47 am

Fran, exposure looks good to me.
Cheers
Denny Smith
SHA Productions
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rick.lang

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Re: EXPOSING URSA MINI PRO

PostThu Jul 19, 2018 3:41 am

Ah, if that was intentional, then the image is well exposed. I only use False Colour for exposing in the camera and use the Parade waveform as you did when grading. I think you’re fine.

I only used an exposure meter when I first was testing the camera, but I’m afraid I don’t use it now. It’s in the bag if I needed it, but I think the tools available are adequate for my needs. Mind you if prefer to work with a meter, I certainly think that is very useful too when you are controlling your light and shadows in a studio setting.
Rick Lang
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostThu Jul 19, 2018 9:11 am

Thanks Denny and Rick!
Good to hear that, I was just looking for some feedback
In run&gun situation I never use light meter, but in this case in studio I can control key light, the amount of fill, background levels, backlight level etc and be confident that I´m getting same results in camera.
The thing I have to put the light meter on 250 ISO to get same result on camera ( 800 ISO ) is a compromise, but it works for me right now. Anyway, the exposure that I use first is false color and waveform, then check levels with light meter to fine-tune the whole image.
Thanks for your answer! I didn't´t find anything clear about it around
I will put the results when everything gets online
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Denny Smith

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Re: EXPOSING URSA MINI PRO

PostThu Jul 19, 2018 5:49 pm

Good, the real value for the light meter in the Studio, is not so much getting thr correct exposure, your false color will do that, but it is great for getting the lighting ratios set between main key light and the fill lights. I usually go for a 2:1 or 3:1, depending on the mood desired.
Cheers
Last edited by Denny Smith on Tue Sep 25, 2018 1:45 am, edited 1 time in total.
Denny Smith
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostThu Jul 19, 2018 8:25 pm

You are right Denny!
Perfect for ratios, In this fashion video I go for 2:1 for the background.
The more tools the better, in a year maybe I will use just one.....
How many DR has URSA mini pro? 14 stops? Has it got the same than BMCC?
Getting use to the URSA, it’s giving me such a good moments!!
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Juri Beythien

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Re: EXPOSING URSA MINI PRO

PostFri Jul 20, 2018 1:15 am

Hey Fran,
Your exposure on your LOG file looks perfectly nailed.
The brightest part of the caucasian skintones are perfectly a pink area, so, you have the widest range in post for your grading and CC around the skin. (For the Studiomood this is the best technical startingpoint)
In my experience, the falsecolor of the ursa mini 4.6/pro works like a charm to get the best consistence between different shots (also with different lightsources and conditions).
Could you maybe share with us your LUT you used, so i could measure it with my personal 4.6k footage and upload some screenshots. So we can compare the final color and contrast pipeline for different imagecontents !??
Cheers,
Juri
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rick.lang

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Re: EXPOSING URSA MINI PRO

PostFri Jul 20, 2018 1:33 am

Dynamic range (may be wrong but from memory):

BMCC/BMPCC 13 stops 2012/2013

BMPC4K/URSA4K 12 stops 2013/2014

URSA4.6K/Pro 15 stops 2015->2016/2017

BMPCC4K 13 stops 2018


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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostFri Jul 20, 2018 9:51 pm

Thanks a lot Jury, I was feeling insecure because I get the URSA months ago, so thanks for your feedback
Of course I can share the LUT, your are welcome to try it out! But I don´t know how to share it, I got the message "the extension cube is not allowed"
And Rick thanks a lot as well for the DR information! I totally forgot it!
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Juri Beythien

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Re: EXPOSING URSA MINI PRO

PostSat Jul 21, 2018 12:40 am

You can upload it to a dropbox and share the link here i think.. should work ;)
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostSun Jul 22, 2018 12:01 pm

I’ll do it! I will put a wetransfer link
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John Brawley

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Re: EXPOSING URSA MINI PRO

PostSun Jul 22, 2018 8:25 pm

Fran Tormo wrote:I let here some pictures, feel free to critic and express what do you think is correct or not
First LOG


Looking at your FC in the first example, I'd say it was a little hot.

I try to have a caucasian skin tone more green than pink. Yeah I know, pink is meant to be skin tone.

I use green instead.

Gives you more highlight wriggle room.

JB
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Frank Glencairn

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 8:06 am

Actually you can get away with a lot, when shooting raw on BM cameras.

Just shot a short, pretty dark mood, and because of time/budget/crew I couldn't do what I usually do - overlight 2 stops, and bring it down in post.

It's pretty amazing how good the Ursa Mini deals with low light (even if some guys say something different) - the room was filled with dark wood panels (even on the ceiling) and we blacked out the windows. My histogram was nothing but a little blob on the left side. I even had to lift the shadows a bit in post. Still it looks pretty good

37595592_2008938762750377_4915899999407046656_n.jpg
37595592_2008938762750377_4915899999407046656_n.jpg (64.26 KiB) Viewed 5462 times


37679031_2009373466040240_627042272910770176_n.jpg
37679031_2009373466040240_627042272910770176_n.jpg (98.95 KiB) Viewed 5462 times
http://frankglencairn.wordpress.com/

I told you so :-)
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 10:52 am

Thanks John Brawley
I will try this next time, I´m coming from A7sII and FS7 slog´s that are very noisy in case you don´t overexpose and I´m always a little hesitant to go down more than over in FC. But what I first notice with the URSA mini pro is that it deliver a nice looking image just with the right exposition and you can see how it will look pretty straight forward.
Wuau Frank Glencairn!! , this is amazing! I have to get confident enough to try this low leves with my URSA
I love dark and moody levels!! I have to check it out! Unfortunately in this work I´m only using HD, 422 because the workflow, it needs to light and fast, so I´m doing the "beauty/highkey" light.
But, definitely I will try this "green" next time!
Last edited by Fran Tormo on Mon Jul 23, 2018 11:45 am, edited 2 times in total.
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 10:54 am

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Uli Plank

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 12:25 pm

Thanks for the LUT!

Yes, I also have a Sony A7S and please forget what you were used to with it. A great low-light camera but IMHO nearly useless in log. I tend to rather use it in one of the Cine profiles.

The UM46P is a very different beast, log is fully functional thanks to better codecs and it can really use the full dynamic range.
No, an iGPU is not enough, and you can't use HEVC 10 bit 4:2:2 in the free version.

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Speed Editor, UltraStudio Monitor 3G, iMac 2017, eGPU
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Fran Tormo

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 2:37 pm

You are welcome Uli Plank, it works for me, but let me know what you think
Yes, I´m trying to detox from slogs!! jejeje, it will take season but soon I will be fine!
Loving the feeling of being able to use the whole DR and getting a look closer in camera that I like, now I´m looking forward to moody and dark, because I think this camera can deliver it very easy without to create a LUT to compensate for overexpose to avoid noise etc....you now, like with all slog stuff. This camera will give more freedom and let me be more bold at exposure, but I need to try and get confident!
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Juri Beythien

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Re: EXPOSING URSA MINI PRO

PostMon Jul 23, 2018 9:47 pm

John, this sounds reasonable, i will try it next time with the green area for skin, especially for shooting in prores codecs..
Tanks for the hint :idea:
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Uli Plank

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Re: EXPOSING URSA MINI PRO

PostTue Jul 24, 2018 3:03 am

Moody and dark should be attained by proper lighting ratio and still exposing as high as possible without burning the highlights.

No video camera is generating silky blacks like film, you may want to pull down the shadows, but never lift them.

My gripe with the Sony A7S is that a given scene rarely is making use of the range Slog could hold, and that makes your 8 bit images fall apart in post. I'd always try to fill the waveform by choosing the proper profile on that camera, but that needs very careful exposure.

A camera like the UM46Pro ist much more forgiving.
No, an iGPU is not enough, and you can't use HEVC 10 bit 4:2:2 in the free version.

Studio 18.6.5, MacOS 13.6.5
MacBook M1 Pro, 16 GPU cores, 32 GB RAM and iPhone 15 Pro
Speed Editor, UltraStudio Monitor 3G, iMac 2017, eGPU

MarcoPadoan

Re: EXPOSING URSA MINI PRO

PostMon Sep 24, 2018 8:13 pm

Hi!
I did some tests with my seconic light meter and false colour on my UMP.
And 18% grey, which is green on false colour, and also what the spotter is setting it's value too, was correct. The light meter was at 800 ISO as well as the camera. So they match. I am wondering how you come up with the other finding to set the meter to 250?
Great thread!
Cheers!

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