Martin / guys I hope you'll not mind if I make some comments from a colour management <Best Practice> point of view.
There is no such thing as a best practice working space. martin.wood-at-kodak.com::9/11/04::11:08 am:: GMT-0000 >Saving files as Pro Photo RGB has many benefits. and many ways to cause serious problems. You forgot to say that it's essentially a 16 bit only working space. Even a reasonable tonal or colour edit on an 8 bit file in ProPhoto can cause posterisation, it's a massive space with only 256 levels available (in 8 bit) to define tone in any channel. > >It is the widest space available and wider than any output device can >handle. true. >This means that files are shrunk to fit the working space of the >end user, resulting in good reproductions. really, how does this <shrinking> for <good reproductions> take place? Converting between working spaces (larger to smaller) is often catastrophic in areas of high saturation where detail is important. >Saving as say sRGB will result in horrible stuff if that file is then >opened and stretched out to Adobe 1998. If Adobe RGB is assigned to an sRGB file it's going to look awfully saturated, but why would anyone assign the wrong colour space like that? Although the <correct> method would be to convert between the colour spaces, there is not often a good reason to convert sRGB to GRAB - it's somewhat like pouring a half pint into a pint glass, you just end up with a big glass with not much water in it. (relative size comparison exaggerated here). > >It also means that the best results will be gained in future times if an >archived file is used with the colour space of the day, which may well be >much wider than is currently used. Are you meaning to suggest that it would be advantageous for an image file to be kept in a storage/edit space which is accommodating enough to contain all, or almost all it's original data? I'd certainly agree with that. But, given the tripwires, I'd normally suggest a les extreme space then ProPhoto, maybe Ektachrome Space or the free Ekta Space? Info about this is free to download at: http://www.colourmanagement.net/downloads.html Best Regards Neil Barstow Consulting in Imaging & Colour Management http://www.colourmanagement.net/ http://www.apple.com/uk/creative/neilbarstow/ =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
