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Re: 10 bit logarithmic format vs. 16 bit linear format
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Re: 10 bit logarithmic format vs. 16 bit linear format
by
ben scott
on Apr 21, 2008 at 10:23:30 pm
not strictly true mathemetically so not sure about log and linear then being similar quality. suppose what I quoting here relates to film rather than video a lot more as darks in a cinema are much more noticeable
I am no means an expert on this, just thought the explanation was simplifying it a bit
the
relative brightness change
between linear as it works across dark ranges is anything but even and can move into more perceptible banding. basically as you move towards blacks it wont record as much information unless outputting to a articially large range (using look up tables for gamma correction on monitor) for later outputting in log.
the relative brightness change threshold needs to remain below 1.00 for there to not be any imperceptible banding, this is not the case with 8bit linear formats and with 16 bit formats it is "just moving the problem around - it wouldn't change the fundamental nature of it all" p270 digital compositing for film and video
logarithmic colour spaces have equal relative brightness changes and have none of these problems in the darks with banding after colour corrections
my advice is read that book, has great explanation of it.
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Current Message Thread:
10 bit logarithmic format vs. 16 bit linear format
by christina glock on Apr 17, 2008 at 12:56:34 pm
Re: 10 bit logarithmic format vs. 16 bit linear format
by Joseph Owens on Apr 19, 2008 at 3:38:22 am
Re: 10 bit logarithmic format vs. 16 bit linear format
by christina glock on Apr 21, 2008 at 12:55:00 pm
Re: 10 bit logarithmic format vs. 16 bit linear format
by ben scott on Apr 21, 2008 at 10:23:30 pm
Re: 10 bit logarithmic format vs. 16 bit linear format
by christina glock on Apr 22, 2008 at 6:56:27 am
Re: 10 bit logarithmic format vs. 16 bit linear format
by ben scott on Apr 23, 2008 at 9:28:28 pm
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