"William Robb" <[EMAIL PROTECTED]> wrote: >The requirement is that the files go straight from the camera to the >photolab. >I don't know about Fuji, but Noritsu doesn't allow changing colour >space (at least not on the machine I operate), and as far as I can >tell, only recognizes sRGB
It isn't so much that it doesn't *recognize* other color spaces, it's that it converts them into sRGB and, most significantly, *how* it converts them to sRGB. There are several types of colorspace conversion: Relative Colorimetric conversion, Absolute Colorimetric conversion, Perceptual conversion and Saturation conversion. Without going into details on each one, it sounds as if Fuji/Noritsu are using Absolute Colorimetric conversion and clipping out-of-gamut colors. If the Fuji and Noritsu machines do indeed use sRGB (I've never worked with either myself so I can't say from experience), it sounds as if anyone wishing to have their digital files printed on them would be advised to provide files in sRGB colorspace. If you're shooting/scanning in Adobe RGB (as you should be if you're doing fine art printing, or having it done elsewhere), you'd best do the conversion yourself in Photoshop. First, go to Edit > Color Settings, make sure you have the Advanced Settings box checked and select either Perceptual or Relative Colorimetric for the color conversion preference (I don't know from experience which will work best - you'll have to experiment). Then go to Image > Mode > Convert to Profile and convert your image to sRGB. Save under another name or in a different directory and you'll have the image in sRGB all ready for the lab. -- Mark Roberts Photography and writing www.robertstech.com
