Which ND filter for BMPCC ISO800 in daylight ?

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Daniel Mies

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Which ND filter for BMPCC ISO800 in daylight ?

PostMon Sep 04, 2017 9:05 am

Hi there,

Gonna order three Hoya PROND filters, but not sure which ones would be sufficient for use on a bright sunny day, bright and cloudy day, cloudy grey day, when wanting to keep the ISO at 800 on BMPCC, and keep the iris
somewhere between 3,5 - 8.

Any help on that matter?
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Nick Gombinsky

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostTue Sep 05, 2017 5:05 pm

Standard daylight shooting filter set is ND0.3, ND0.6, ND0.9, and CPL*. Sometimes an ND1.2 IR can come handy.

Keep in mind the CPL filter besides polarizing, cuts down exposure by 2 stops, so it can act as an ND0.6 also.


Hope it helps




*in my corner of the world.
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Denny Smith

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostTue Sep 05, 2017 5:17 pm

An ENG camera has .6, .9 and 1.2 ND's, this is what I got for my ND setup to start, adding a 1.8 later on, to avoid stacking.
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostTue Sep 05, 2017 6:13 pm

Most built-in filters, including the URSA Mini Pro, offer 2, 4, 6 stops and sometimes stronger. That would be my guide for usefulness. If you end up shooting with T4-T8 most of the time, which is around the best focus for many lenses, you will be good in most situations. There's going to be times when you might need to go to T2.8 or T11.


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 06, 2017 10:58 am

Thanks a lot, guys!

Rick: yes, I wanna keep the aperture in that mentioned sweet spot (T4-8) combined with what I have come to understand is the BMPCC ISO sweet spot, at 800?  

So I think I will get a PROND4, PROND16 and a PROND64.

Seems to be a good start, and I can always stack to get a 8 or 10 stop-down with the mentioned filters.
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Robert Niessner

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 06, 2017 11:19 am

Agree with Rick. With my UM46k I found 2 stops increments being the most useful choice.
I got IR-ND 0.6 (4), 1.2 (16), and 1.8 (64) which are serving me well in the middle of Europe.

So your choice of PROND4, PROND16 and a PROND64 should be a good start.
Robert Niessner
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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 06, 2017 1:50 pm

Thanks, Robert!

Nick: "Keep in mind the CPL filter besides polarizing, cuts down exposure by 2 stops, so it can act as an ND0.6 also".

True that, Nick. Just curious. Would using the CPL as a 2-stop ND filter, negatively affect the image in any way? Besides the obvious fact that it would get rid of reflections, when perhaps not needed to...
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Nick Gombinsky

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 06, 2017 2:05 pm

Daniel Mies wrote:Just curious. Would using the CPL as a 2-stop ND filter, negatively affect the image in any way? Besides the obvious fact that it would get rid of reflections, when perhaps not needed to...



You can rotate it so it doesn't apply the polarizing effect and just act as an ND, and when needed, rotate it into place to act as a CPL. Nothing else happens if you don't have it in the correct angle.
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Kyle Gordon

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 06, 2017 5:15 pm

it's hard to shoot T8 on a BM Ursa Mini 4.6k tho unless you have very nice lenses. Most DSLR type lenses 35mm to 85mm will show magenta fringing on the 4.6k sensor at T8.
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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostThu Sep 07, 2017 10:48 am

Thanks, Nick!
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostFri Sep 08, 2017 5:29 pm

Daniel, I'm not sure how urgent your need is for the Hoya ProND filters. Next week, the IBC2017 trade fair will be held from Sep 14-18 I believe. I expect there'll be some new ND filters announced there if you can wait for it.


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSat Sep 09, 2017 10:30 am

Thanks, Rick! Will wait for some hopefully nice surprises then.
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John Brawley

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSat Sep 09, 2017 2:02 pm

Where do you live ? Where are you shooting ? Sunshine is brighter in some parts of the world compared to others.

In Australia I'd want an N6 (2 stops) a 1.2 (4 stops) and a 2.1 (7 Stops)

JB
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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSun Sep 10, 2017 10:31 am

Hi John! I am mostly shooting in Scandinavia, currently in Poland. I got my hands on a speedbooster this weekend and did some tests with Sigmas 18-35 1.8. Aperture goes now from 1.0-9.5.
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSun Sep 10, 2017 8:01 pm

Daniel, I'm thinking the widest aperture is closer to f/1.3 or T1.4 rather than f/1.0. 1.8x0.71=1.28. Maybe I'm forgetting something.


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSun Sep 10, 2017 8:13 pm

Rick, you might be right. However my BMPCC display says 1.0. I read quite a lot of different opinions on this matter, and no one seems to really be sure about this one. Would be nice to clear it out once and for all.
I got this one: https://www.bhphotovideo.com/c/product/ ... _lens.html
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostSun Sep 10, 2017 9:22 pm

I knew I was forgetting something. 1.8x0.58=1 so you are correct. I was thinking of the MFT camera versions that are 0.71x focal reducers.

My brain hasn't been the same today after watching the final two closing episodes of Twin Peaks on TV. If you watched them, you'll understand and be amazed I can still type; if you didn't catch the 18 episodes this season, save your sanity and enjoy the world as you know it.


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostMon Sep 11, 2017 9:00 pm

Hehe. I know that feeling!
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostWed Sep 13, 2017 7:39 pm

Stay tuned to IBC2017 Daniel to find something you may like. Shhh!


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostFri Sep 15, 2017 7:42 am

Expectations are rising for every day now, Rick.
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rick.lang

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostMon Sep 18, 2017 5:44 pm

Daniel, I am quite impressed with the SLR Magic IEND1.2 86mm filter as illustrated in my review in another thread here. Plus shot a client video yesterday with it. To me, if you only bought one filter to start 'cheap' there's no better value than the IEND1.2 4-stop filter at $149 plus the cost of a step-up ring.


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Daniel Mies

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Re: Which ND filter for BMPCC ISO800 in daylight ?

PostTue Sep 19, 2017 9:19 am

X-mas came early... That looks very interesting, Rick. Would love to see what you shot so far. Specially how it handles bokeh.
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rick.lang

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Which ND filter for BMPCC ISO800 in daylight ?

PostTue Sep 19, 2017 5:47 pm

The tests I posted from September 15 and 16, certainly weren't beauty shots including lens flares and bokeh. I'm trying to arrange another shoot with my model shortly. The IEND1.2 certainly won't cause bad bokeh. The APO lenses I use affect bokeh, not the ND filters. Still I'll include bokeh then when I do the beauty shots. Don't hold you breath though.


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