Canon c 300 C-log footage is foggy and and orange tint

Posted by baxtorlee 
Canon c 300 C-log footage is foggy and and orange tint
August 24, 2013 05:09AM
Hey Guys,

Need your advice here. Just picked up a project that shot on the Canon C300 c-log. Most of the footage is foggy and in an orange tint. Bit confused cause when i white balance the footage, there is still the a fog on it. Just wondering if this is how c log footage looks. Would love any advice out there.
here is the original
[s856.photobucket.com]
here is the white balanced
[s856.photobucket.com]

Thanks

MAc Pro tower 12 core
FCP 7
24gigs ram
Re: Canon c 300 C-log footage is foggy and and orange tint
August 24, 2013 02:22PM
Yep, c-log is low contrast.

I've only worked with alexa c-log in fcp, and as far as that goes there is a good filter from Antler for converting to a better look.
The 3-ay colour corrector doesn't cut it.

You can't edit with this filter, it's very slow, you need to batch export the footage, or not worry about it, and deal with it in the grade.

Maybe cannon have a similar or better filter


Nick
Re: Canon c 300 C-log footage is foggy and and orange tint
August 24, 2013 04:18PM
You can create prores offline rushes from the C-log in the free DaVinci Resolve Lite. The Resolve has built in LUTs to convert the C-log footage.



www.strypesinpost.com
Re: Canon c 300 C-log footage is foggy and and orange tint
August 24, 2013 06:18PM
You can create a monitor calibration so the Canon's "log" footage displays correctly.

Aside.
It was heroic of Canon to try to code their large dynamic range acquisition into an 8-bit recording using a log function. Has Canon published their function?* Some theory opposes it. Suppose you had a super-duper 5000:1 display with white at 200 nits and black at 0.04 nits. (This is less than the claimed dynamic range of the camera.) This luminance range requires about 372 Hecht-optimal steps to avoid visible banding. See Figure 3 in an old paper of mine.
Why-oh-why doesn't this $14,000 Canon camera (body) record 10-bit? Encoding with 10-bit, even with unsmart precorrection gamma 1/2.2, does handle that super-duper display without visible banding.

Dennis Couzin
Berlin, Germany

*[note added 31 August 2013: Canon published their function here. It has a very long toe making it nearer Hecht-optimal than a simple log function.]
Re: Canon c 300 C-log footage is foggy and and orange tint
August 25, 2013 03:37AM
oh, right, Resolve!
it's the new miracle app


nick
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