On 24 Feb 2011, at 12:30, Iliah Borg wrote:
But of course, chart is on the film. Reproduction here is of a physical object, that is why we are operating measured values, not the desired values. So, in your words - "the chart on the film" is the subject of reproduction. This allows to approximate how the particular film responds to the light.
How useful are the results of this process?I looked at trying to profile negatives on our drum scanners more than a decade ago but the results were very poor.
You could build a good profile from a correctly exposed test image but variations in over/under exposure in real world images rendered the profiles useless.
And, as you also need to incorporate a wide choice of print papers into colour managment, I didn't really see how profiling would be faster or better than having a good scanner operator getting the colour right during scanning?
We do build custom targets and profiles for photographic papers which work very well -- but I've never seen a profile for a negative stock that would give consistent or acceptable results for high-end work.
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