On Fri, 04 Jul 2008 10:14:36 -0600 Dale Olds <[EMAIL PROTECTED]> wrote:
> What are the expected settings and steps to prepare photos for print by > online printing service with rawstudio? I guess it may depend on the online printing service. > I have calibrated my monitor with spyder II and Argyll, and retrieved > the color profiles for the destination printers. I load the monitor > profile in X using dispwin. In rawstudio preferences, color tab, I > enable the experimantal color management. > > 1. I would expect my camera (Olympus E510) to set the color profile, but > I set this box to AdobeRGB1998 profile that comes with OpenSUSE 11 (my > distro) since I have set the camera to the Adobe colerspce. Does setting > this override the embedded profile? Is BuiltInRGBProfile the embedded profile? My camera (Pentax K10D) has two RGB profiles for jpeg pictures, namely sRGB and AdobeRGB, but I am not sure, if the selection between them as any impact on resulted raw files. I suppose raw data is not valued according to either AdobeRGB or sRGB, but according to each camera's natural RGB profile which can be measured. I got a profile for my camera (model) from one of the sources mentioned at http://ufraw.sourceforge.net/Colors.html / Camera profiles. I noticed, that color noise is more visible, if I use color management. I guess that is due to more saturation and/or more brightness in shadows the profile made for my camera generates. > 2. I set the display profile to the profile that I made using the spyder > and argyll. Occasionally, while setting a profile I get a segfault, but > I will send that crash report to the rawstudio-dev list. I have tried this setting, but I haven't noticed any impact in colors displayed :( I guess the change would be visible latest when you uncheck and check the "Enable color management (experimental)" checkbox. I made monitor profile by Huey in Windows and just copied the profile under /usr/share/color/icc. Since I use a CRT monitor, I suppose a good theoretical approximation profile for it is the NativePC profile available at http://www.aim-dtp.net/aim/download/aim_profiles.zip. I am using Xubuntu 8.04. Does your system (OpenSUSE 11) have some system-wide display profile setting? > 3. I set the export profile to the profile for the destination printer > and export the photos. > > The resulting jpg output is unusable. "Unexpected marker type 0x72". The > file appears to have the icc information for the printer embedded. Which program tells "Unexpected marker type 0x72"? Maybe you could use some other output profile (maybe NativePC or AdobeRGB?) and try to convert to the printing profile later in Gimp? (The conversion might not be very accurate, since AFAIK Gimp handles only 8bit/channel color management so far.) Or you could skip color management in Rawstudio, assign a profile that matches your system in gimp and convert to the printer profile? > Are the above steps the expected usage? If, not, what should I have set? Good question. -- Jarno Suni - http://iki.fi/8/ Ole hyvä ja käytä XHTML-yhteensopivaa WWW-selainta. Please use a XHTML compliant web browser. _______________________________________________ Rawstudio-users mailing list [email protected] http://rawstudio.org/cgi-bin/mailman/listinfo/rawstudio-users
