On 26 Feb 2011, at 15:48, Iliah Borg wrote:
On Feb 26, 2011, at 10:48 AM, Qcore wrote:My thoughts are that profiling in negative scanning workflows is doing little more than providing a rough guide for the interpretative edits which are always required.A scanner cannot get RGB values from negative that have any dependable relationship with the colorimetry of the original scene. That's the whole point of using negative -- massive exposure range recorded using minimal density range.And given that the scanned values don't correspond to the colorimetry of the final print either, I can't see profiling playing anything other than a very minor part in the image processing.Was the above from your previous e-mail?
No, it was from thinking about your previous email and also Rishi's comment:
For [matching the original scene], why can't one simply build a profile from the negative scan(inverted I would think) & spectrophotometric measurements of the reflective target shot (ColorChecker)?
Unfortunately the thinking was done at the gym and the reply attempted on an iPod :(
Regards -- Martin Orpen Idea Digital Imaging Ltd