Hi
I'm using DOpus 9 on a Windows 7 64Bit system and I've noticed that the colours of photos when viewed with Viewer are more saturated than using MS Windows Photo Viewer or Photoshop. I currently do no have any calibrated ICC profiles loaded and just using standard sRGB. I was wondering what is causing the difference in colour? I have attached a test photo to show the differences. The test pic from Viewer is on the right. Both pics are JPG and not RAW. Any ideas please?
The Preferences / Miscellaneous / Advanced: use_color_management option may make the two images look the same. I'm not sure if the option was there back in Opus 9 but it exists in Opus 10.
(The option only handles a very specific case: It converts CMYK JPEGs from their color profile into sRGB. Other image formats, including RGB JPEGs, are not affected and the destination color profile is always sRGB even if it's not what the monitor is set to. The RAW plugin has its own color management options which are independent of the use_color_managament setting.)
Thanks for the reply. Yes that option is in v9 and it has been enabled, but the issue is still there.
[quote="tsu3000"]Hi
I'm using DOpus 9 on a Windows 7 64Bit system and I've noticed that the colours of photos when viewed with Viewer are more saturated than using MS Windows Photo Viewer or Photoshop. I currently do no have any calibrated ICC profiles loaded and just using standard sRGB. I was wondering what is causing the difference in colour? I have attached a test photo to show the differences. The test pic from Viewer is on the right. Both pics are JPG and not RAW. Any ideas please?[/quote]Simple reply, that has to do with the embedded profile inside this Printer Test file.jpg.
Even if you are not using a custom profile obtained after calibrating your screen, you are using the sRGB profile which means a specific color space using a 2.2 gamma. Now, this image is using a ColorMatch RGB color space which is slightly different AND more important, this color space is using a 1.8 gamma which changes the look of the image when viewing under color managed environment. That's is the main reason of the color difference as Directory Opus doesn't really support color management, it is unable to adjust image gamma from color profile.
(from the image you posted, Directory Opus is on the right and Windows Photo Viewer is on the left)
