Hi! On Sun, Jan 23, 2011 at 21:04, David Vincent-Jones <[email protected]>wrote:
> 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. > The conversion should be done by the application/driver. I don't know the Linux print system, so I cannot say whether it should be converted by Digikam or the printer driver. This is unfortunate for you, since you should for optimal results be able to send files in a wider color gamut to your printer (like Adobe RGB or Prophoto). That is a bigger issue than whether the image is 16 or 8 bit. I honestly do will have a hard time believing you can spot the difference between 8 and 16 bit on print. > > 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. > No, there are alot of programs that doesn't read the ICC profiles, so to be 100% sure, send them an 8 bit sRGB file. If you are sending it to professionals you can be pretty sure they have a proper color managed process. > > David > > Regards, Klaus Post http://www.klauspost.com
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