Hello, After much research and many subscriptions to mailing lists, slowly working my way up the food chain, I find myself here in the hopes that I can find an answer.
I own a Pentax K-7 DSLR. It seems that any application that uses LittleCMS for color management does not detect the embedded color profile in the JPG and TIF files generated by my camera. This caused a bit of a stir on pentaxforums.com, and I've determined that camera-generated JPG and TIF files from many (perhaps all?) Pentax DSLR models embed the color profile in a way that LittleCMS does not detect. This is not limited to just my K-7. Pentax includes an option to generate these files in either sRGB or Adobe RGB color space, but neither one gets detected. Even the built-in monitor of the camera fails to show the Adobe RGB images properly during playback. It interprets them as sRGB, which makes them look washed out and bland (does Pentax use LittleCMS in the camera firmware?). Due to the inconsistent way that some applications handle this situation, it's caused some headaches to my fellow Pentaxians. For example, Gimp does not ask what to do when no color profile is detected, it just interprets it in whatever working space is currently set in the preferences. Whatever system Adobe uses does properly detect the embedded color profile. So far, my research has led me to believe this is due to an ICC profile that's either embedded in a non-standard way, or in a version that LittleCMS does not yet support. I wonder if anyone could shed some light on the subject, and if there's anything I can do to help solve this problem. I am not a developer, I'm just an amateur photographer who used to do a lot of graphic design, but I'd be happy to help in any way I can. My system (openSUSE 11.2) currently has lcms-1.18a installed. Here are two files straight from my camera for reference: Adobe RGB: http://lh6.ggpht.com/_HAZjMzZWrtc/S05qkb7KkYI/AAAAAAAABCw/oPJ80XXYH-Y/d/_GOR3359.JPG sRGB: http://lh3.ggpht.com/_HAZjMzZWrtc/S05qk1yxBOI/AAAAAAAABC0/5kXGfiIIF7s/d/GORE3360.JPG Thanks, -- Frank Gore Project Manager www.projectpontiac.com ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
