C100: Which ISO for different CP Profiles?

J

Jason Rae

Well-known member
I was reading online that the magic or sweat spot for ISO on the C100 was 850 and should try and be used when filming. But I read a thread just today that mentioned if your shooting WDR we should be using ISO 320 and use 850 when shooting C-LOG. When I shot some test footage with the WDR CP outside in daylight at 850 ISO it did bring in some noise, but again I am a newbie and that might be another setting I was missing.

So to land my plane here, which ISO is better for WDR when shooting outside in daylight, or do you guys think I should be shooting in C-LOG when shooting in direct daylight. Any suggestions?

:)
 
Shouldn't matter with WDR or C-LOG as the C100's Native ISO is '850' so try and use your ND filters and aperture to keep it around that. Having said that always try and do a Black Balance 'BB' after changing ISO's as it is recommended to reduce noise when changing around your ISO's. Also again, having said that, you should see no inherent noise if you shot at ISO 850. Heck even ISO 2000 is very clean. BUT for some strange reason a select few are complaining about noise in the C100.

Are you recording to a Ninja? If so the Ninja bypasses the C100's noise reduction so it will come out a little noisier.
 
I was not shooting on the Ninja when I did this quick test, I had it on WDR and the ND filters to six and there was noise all over the image. I want to say I had something else off or maybe I needed to add a ND filter on the end of the lens to make that work even better. I for sure have never done a black balance with the camera which I will try first thing in the morning. I will google how to do this as well to make sure I do it right. Have you ever tried shooting at a lower ISO in bright daylight as 850 and the ND filter all the way up its still too bright. My f stop was at about 8 or 9 if i remember correctly.
 
Pave1 said:
https://vimeo.com/88598926 from cca 11:00 (the first part is iso 800, the second is iso cca 2000, the third part is iso 4000).
Click to expand...



Thank you for this test... this was very comprehensive and helpful. I do have to say I know everyone is saying keep the camera at ISO 850 but I have to say if you take the ISO down to 320 in bright daylight the image looks better. I am newbie so maybe I am just missing something here, will do more test today and also look at the shots we took yesterday in bright sunlight and let you guys know. :)
 
At ISO 850 and up, the image retains more details in the highlights. Below ISO 850 it retains more detail in the shadows. See the chart below for reference.

dynamic_range_chart__fs.jpg


So technically, if you were shooting a dark/night scene, you'd want to stay in the lower ISO range but if you were shooting in bright daylight, you'd want to stay at ISO 850 and up and add ND's.
 
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