Richard Kenward wrote: > I am looking for information about how files from scan backs compare in > colour gamut to medium speed Ektachrome film. If anyone can point me > to maps that show the comparison this would be interesting.
That is kind of hard Richard. If you plot a camera profile in something like Colorthink you can clearly see that the gamut is larger than any film. Now if you then create your camera profile with another piece of kit you get a different kit. So by changing profilir you change the gamut of your camera? - I think not. Gamut plots from camera profiles depend on extrapolation as the cameras can see colours that cannot be produced on any camera target. The only way to find out whether the gamut was bigger would be to shoot something like a GretagMacbeth DC chart on ectachrome and on a DC camera, then plot the images (not the profiles) in colorthink. This will give you an indication of how both devices will record the colours on the DC chart. Whether this will tell you what you need to know I can't tell. To the best of my knowledge there is no way to accurately plot the gamut of a DC camera - essentially they change depending on lighting. However if you are really interested - Beware, shameless plug ahead, you might want to consider pencilling out March 16th where Neil and myself will be doing a colour management seminar on input (output is the day after, March 17th.). Among others we'll have Dietmar Fuchs, product manager from GretagMacbeth (responsible for GM's latest profiling solution - and a true colour geek like the rest of us) available in a live DC profiling session and panel discussion. If anyone can, he'd be the bloke who can answer your question. More information on the seminar to follow later this week. (if anyone want a direct mail about the event please send a mail to: <email[at]pixl.dk> (replace [at] with @), subject: seminar, and we'll keep you posted. Best Regards, Thomas Holm / Pixl Aps - Photographer, Educator, Colour Management Consultant & Seminar speaker - Remote Profiling Service (Output ICC profiles) - www.pixl.dk � Email: th[AT]pixl.dk -- =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
