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Mixing FS7 & F5

Documentary A&B-Cam

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#1 Philipp Kunzli

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Posted 15 July 2016 - 05:08 AM

We're right now in preproduction for a documentary for which we're going to need two cameras.

It's an international coproduction and it's going to be shoot in two countries. One Company owns

a F5 already, the second one is considering buying a FS7...

 

There are times when we will be shooting with both cameras the same time and there are situation

when we shoot a whole scene with one and the next with the other camera.

 

Does anyone have any experience how the to cameras go together. How do they mix? 

Or are there any special set up to bring them closer?

 

Thanks for your feedback. 

 

Philipp


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#2 Phil Rhodes

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Posted 15 July 2016 - 05:10 AM

Similar look, the F5 has noticeably poorer noise performance. It's the same sensor, but different electronics.


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#3 Mark Kenfield

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Posted 15 July 2016 - 05:56 AM

You'll be fine, they'll cut as well together as two different cameras can. Shoot SLOG3/SGamut3.cine with both for best results, and ensure both sensors are exposed properly, with middle grey at the appropriate place on a waveform (the supposed 2000 ISO sensitivity of both cameras hasn't wrung true in my tests).


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#4 Kenny N Suleimanagich

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Posted 15 July 2016 - 07:57 AM

Shoot a color chart at the head of each setup, you'll save a lot of time in post and have a good starting point
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#5 Robin R Probyn

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Posted 16 July 2016 - 08:50 AM

Oh sorry totally mis read the OP.. ! its late here.. yes Fs7 great bang for the buck..


Edited by Robin R Probyn, 16 July 2016 - 08:51 AM.

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#6 Philipp Kunzli

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Posted 16 July 2016 - 01:20 PM

You'll be fine, they'll cut as well together as two different cameras can. Shoot SLOG3/SGamut3.cine with both for best results, and ensure both sensors are exposed properly, with middle grey at the appropriate place on a waveform (the supposed 2000 ISO sensitivity of both cameras hasn't wrung true in my tests).

 

I totally agree with you. The FS 7 isn't 2000 ISO! I postet already a quite intense ISO test a few month ago. 

 

http://www.cinematography.com/index.php?showtopic=67992  

 

In my experience I shot it 1250...


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#7 Mark Kenfield

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Posted 17 July 2016 - 05:18 AM

I got 1125 ISO for my F5, and have seen basically the same response on the FS7.

For anyone interested, you can see the tests and read the methodology on my blog: www.dreamsmiths.com.au/blog

You'll note that I DON'T advocate overexposing those sensors, merely exposing them properly. Overexposing SLOG in 10-bit compressed codecs will force the brighter parts of your image into more compressed parts of the gamma curve - which will leave you with less tonality and more plastic-looking skin tones (perhaps the most common crime I see commited with these cameras).
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#8 Philipp Kunzli

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Posted 20 July 2016 - 02:43 AM

... which will leave you with less tonality and more plastic-looking skin tones. (perhaps the most common crime I see commited with these cameras).

 

I 100% agree!


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