Yellow colour cast on all photos help!

I do not understand your question - in looking at the example you posted my opinion would be that the iPhoto version shows the picture you took and canon DPP version shows one that has been modified - the iPhoto version looks like a real room as a human and the camera would see it - the CDPP version looks like either an edited one or one with the white balance way off - I see a strong blue cast to the CDPP version and a natural looking photo in the iPhoto version

Sorry that I don't get it -that is why I haven't replied - may be the same for others

LN

Christoff:

The photo on the left is the correct color rendition, i.e. the bluish version, right? Do other applications, i.e. Preview, Safari display the photos correctly on your computer?

TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto (iPhoto.Library for iPhoto 5 and earlier) database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've created an Automator workflow application (requires Tiger or later), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. It's compatible with iPhoto 6 and 7 libraries and Tiger and Leopard. Just put the application in the Dock and click on it whenever you want to backup the dB file. iPhoto does not have to be closed to run the application, just idle. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.

Note: There's now an Automator backup application for iPhoto 5 that will work with Tiger or Leopard.

It must be my monitor then as the left photo looks very cold and bluish. The one on the right looks warm and more "normal" (but what is normal these days?). Very strange. Open the photo with Quicktime Player ColorSync Utility and see how it's displayed there. I believe Most of the Apple applications use Quicktime to render the images and that would be a good test. With ColorSync Utility you can assign/apply different color profiles and might see where the issue lies.

You can compare the camera's color profile with some of the others with ColorSync Utility and see if there's a significant difference. I've found that most all sRGB profiles are very close except, of course, for Adobe's RGB. But then it's not an sRGB profile is it?

Its his monitor - I see the back/right iPhoto version as correct and the front/left CDPP version as being very blue

in looking at the example you posted my opinion would be that the iPhoto version shows the picture you took and canon DPP version shows one that has been modified - the iPhoto version looks like a real room as a human and the camera would see it - the CDPP version looks like either an edited one or one with the white balance way off - I see a strong blue cast to the CDPP version and a natural looking photo in the iPhoto version

LN

Now those are both very close for me. The left one is a little snappier, the ceiling a little whiter, but very close. Color control is very difficult. That's why many professionals use high end CRT monitors and calibrate them with 3rd party hardware and software.

On my iMac they are very similer - the iPhoto one is slightly more yellow and I would judge more realistic but not a lot of difference - nothing like it was before

LN