C100: Highest "useable" ISO on C100 Mk1?

jthabel

Well-known member
For all you experienced C100 users -- what's the highest useable ISO you'd use on a shoot while still retaining what you would consider "quality" professional results? I'm using a Mark1, shooting in C-log. Trying to stick with 850 ISO as much as possible, but it'd be nice to know how much leeway I really have. I expect I'll be doing fairly heavy grading. Recording ProRes onto a Ninja2. Thanks!
 
For all you experienced C100 users -- what's the highest useable ISO you'd use on a shoot while still retaining what you would consider "quality" professional results? I'm using a Mark1, shooting in C-log. Trying to stick with 850 ISO as much as possible, but it'd be nice to know how much leeway I really have. I expect I'll be doing fairly heavy grading. Recording ProRes onto a Ninja2. Thanks!
The general consensus here is 3200 is clean and used a lot for shooting at night with street lights. At 6400, the "noise" comes up slightly but Canon made their noise move, so it looks like film grain....you can use the noise reduction setting in the menu to dial down some of it but I would not use it any higher than 50%....otherwise, it will just end up softening the whole pic.....

Jim MArtin
EVSonline.com
 
It also depends on the picture profile. Cine 1 and 2 seem pretty clean. Possibly Canon log too, though I don't usually shoot log. Wide DR is the worst for noise at high ISO.

It also seems to help to have the blacks just kissing zero on the waveform, and eliminating the ability to record highlights above 100 IRE ( the so-called super whites).

I have a Cine 1 profile with backs dropped, no super whites, and the built-in noise reduction set to 2 or 3. I'm comfortable shooting at any ISO up to 20,000 if need be, especially for web delivery. When I was shooting Wide DR at high ISO, it would start getting nasty blue and blocky above 10,000 or so.
 
It'll be helpful to know what kind of projects you're working on? Where are you screening? There usable for Youtube, Vimeo, TV Broadcast, Cinema 2K DCP OR 4K Uprezing DCP etc, etc...

I'll say for Internet, Youtube - 6400 would be fine, Vimeo -3200 probably could be alright, but for Cinema release or TV Channel in HD/2K, I Personally wouldn't go over 1600-2000ISO, but this is very General and personal preferences.

But you should always do your own tests depending on the project or kind of work in hand. shooting high ISO in Daylight with a high Key is not the same like with low light -low key, and also colours make a deference, and skin tones and your style of shooting, and how you want it to look.
 
I'll be shooting a variety of projects, but for the purposes of this discussion, let's say I'm shooting narrative shorts which will more than likely be limited to online distribution, but also have the potential for limited theatrical/festival engagements. Uprezzing to 2k is a possibility. Everything will be shot in C-log.
 
I find it to be useable for doc footage up to 6400. I like to shoot as clean as possible for narrative, sometimes even sacrificing DR and shooting at 320.
 
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