Yes Klaus, I am saving as 16 data and traditionally I have saved in png format.
Here is the conundrum: I use Digikam to manage my files, for print output and sending files out to print services etc. When I import a RS png file into Digikam (with my Color Management, sRGB, turned on) it reads the profile, interprets it, and correctly displays it .. so far so good. Now if I sent that file out to the printer then the printer is reading the RS profile without interpretation and the results are very different. This occurs whether I print through Digikam, through my HP driver or through any generic print driver. I also cannot send the file to anybody else in this state. I can solve the problem by opening a RS file in Digikam, Cinepaint or other programs with the sRGB Color Management turned on ... then I can save the file, without changes and maintaining the results seen in RS. Then I can print the file or send the file to others without color problems. The bare need is this (I think): Can I take an output file from RS and sent it without change to somebody and expect them to see what I intended for them to see? Currently not I am afraid. David On Sun, 2011-01-23 at 09:30 +0315, Klaus Post wrote: > Hi > > My guess is tha you are saving as 16bit -right? > > You notice this problem because the programs you are using are > ignoring the ICC profile that is embedded in the image. > > To maintain the most information in your images we export 16 bit > images with linear gamma. Applications that cannot read the ICC > profile will usually just assume the data is 16 bit gamma 2.2 sRGB. > For these apps use 8 bit sRGB images. > > On 22/01/2011, David Vincent-Jones <[email protected]> wrote: > > There appears to be a color profile problem with RS output. > > > > Images possibly are written without profile (or a corrupt profile if > > that is possible) or maybe the profiles are unreadable. When I read a > > file into Digikam and apply a normal sRGB profile it looks correct but > > if I try to simply open the files with a generic program that does not > > apply a corrective profile the results are very dark particularly in the > > lower curve segment. Trying to print the files creates real problems > > since I suspect that the printer cannot see a profile or cannot read the > > profile information. > > > > If I open a RS generated PNG file in Digikam and without making any > > changes except allowing Digikam to apply the default sRGB profile, then > > save the file to a new name, the entire problem disappears in the new > > saved file. ... Must be a profile problem! > > > > What I know for sure is that output now is decidedly different from a > > couple of weeks back and that nothing that I am producing either in TIFF > > or PNG is printable/usable. > > > > David > > > > > > _______________________________________________ > > Rawstudio-users mailing list > > [email protected] > > http://rawstudio.org/cgi-bin/mailman/listinfo/rawstudio-users > > > > _______________________________________________ Rawstudio-users mailing list [email protected] http://rawstudio.org/cgi-bin/mailman/listinfo/rawstudio-users
