Re: Are gamma discrepancies relevant?
Re: Are gamma discrepancies relevant?
- Subject: Re: Are gamma discrepancies relevant?
- From: Klaus Karcher <email@hidden>
- Date: Fri, 03 Apr 2009 07:35:55 +0200
Marco Ugolini wrote:
I don't think any of this proves anything much about inherent advantages
accruing from the concordance of TRCs between the file and the monitor
profile: it only proves that a file will be subjected to the least possible
amount of potentially damaging transformations when...it effectively does
not undergo any transformations at all! That much I agree with. :-)
So we agree upon the statement that every conversion in 8 bpc leaves its
marks in the form of banding, missing steps and color shifts. (As the
color spaces are not perceptually uniform, some of them are more
annoying than others. Along the gray axis we are particularly sensible
for those quantization artifacts. The larger the differences between the
encodings, the more artifacts will be visible.) The logical conclusion
for me is to avoid 8 bit transformations as much as possible, e.g. by
performing display calibrations or even colorspace conversions with
higher bit depths inside the monitor, by co-ordinating working- and
display TRCs -- or by widening the bottleneck of current display interfaces.
Klaus
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