On Thu, May 27, 2010 at 7:44 AM, Omari Stephens <x...@csail.mit.edu> wrote:
> PNG files support embedded color profiles, though a smaller proportion > of them of them have one, compared to JPEGs Right. My fault. However that images from imageshack were without embedded color profiles. > "Lack of saturation" sounds like you're viewing an AdobeRGB image > without using the AdobeRGB profile. If so, there's not really anything > geeqie can do. In the View->Color Management menu, you can force geeqie > to interpret the photo as if it were AdobeRGB, but the real answer is > "images without embedded profiles should be sRGB, or you should expect > pain and know how to deal with it." You are right (again?). These images are with wider gamut than sRGB, e.g. AdobeRGB. Maybe it's not geeqie problem, however other applications try to solve it. E.g. I opened it Photoshop and I got a window about missing profile and question what to do (leave it as it is or assign a profile). If the image was without profile it's even better to use any of these options than assign it to sRGB without any information as Geeqie does. And I believe that is the problem. Geeqie looks quite useless If i I have to check every image first if does the image have a profile embedded (to be sure that i see the image correctly). I know that maybe some standards say "images without embedded profiles should be sRGB" but it doesn't mean that every user over the world will follow the rule. OK, I use embedded profile when I publish my pictures. Fine. But I can't force other to do the same. So, I believe there should be a workaround in application layer. Correct me, if I am wrong but if we use wider profile than image nothing will happen to the image. Doesn't it mean that we can could set e.g. AdobeRGB as a default if there is no embedded profile? > The other big possibility is that this is some interaction problem > between X11 and OS X. Not having used the two together for anything > color-centric, I have no idea what the story is there. i don't use OSX. don't know what you are talking about. > Firefox's color rendering is not accurate, period. For one thing, IME, > it consistently renders photos-with-embedded-profiles with a noticeably > high blackpoint. You should compare with an app whose only purpose is > to display images, like GIMP. http://img522.imageshack.us/img522/5466/zrzutekranuu.png Here is the image from Geeqie + PS + GIMP. BTW. looks like when i use 'view in new window' option it doesn't respect color management settings. there is no a problem in this case but e.g. when I turn off 'use color profiles' and image with AdobeRGB looks strange (you know what I mean on wide gamut), then still 'view in new window' renders correct view. > It would probably also be useful to compare both geeqie and firefox to > an OS X-native app like Photoshop that is guaranteed to treat color > profiles correctly and display images accurately. I don't know how much > I'd trust Preview or Safari. Probably. I don't have OSX so i can't compare to it. Gonna buy Mac Mini during this summer, so I can make tests but you have to wait like 3 months I guess ;) ------------------------------------------------------------------------------ _______________________________________________ Geeqie-devel mailing list Geeqie-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geeqie-devel
