I'm seeing a mild color magenta shift onscreen in Aperture, compared with a version exported and opened in Photoshop (AdobeRGB, 16 bit), or the same RAW opened in ACR, or opened in Iridient RAW Developer. Printing from either Aperture or Photoshop gives the same result - neutral, no shift, so it is screen only (so can't be a white balance issue)

My system is well calibrated, and my reference monitor is a hardware calibrated Quato 240 LE.

Has anybody else had a similar experience ?

(Mac G5 2.5Ghz, OS X 10.5.5, ATI Radeon X800 XT)

Any particular camera?

I don't see any colour shift when comparing Aperture with images exported to PSCS3 (16bit Adobe RGB). I use an iMac with a Spyder calibrated screen. I am not sure what would cause this. Have you tried redoing your display profile?


Richard

Two things come to mind:

1. Any chance you've left "on-screen proofing" on in Aperture?

2. If you are running two monitors then make sure that the monitor you use for Aperture is selected as the default display in ColorSync. If it isn't then that can lead to problems in certain of Aperture's image previews (e.g. Aperture uses the wrong display profile; this is a system wide Colorsync issue in different programs.)

--
Web Site
Blog

Thanks everybody for the prompt replies - so there ARE still Aperture users in the wild :-)



That nailed it. I had no idea that this was an issue. Learn something new every day!

Thanks Jon - nice website, by the way. I'll spend some there later today...

Thanks.

I came across this a month or two ago myself when I changed from two ACD's to one ACD + an NEC wide gamut display. From my understanding it's a Colorsync OS 10.5.x issue the affects most, if not all, programs that can use two monitors (even if you are only using one to review images.)

Am I correct in assuming this is only a problem if you have not profiled every attached display?

No, you are not correct.

I experienced colour shift also on my Acd 20", attached to Macbook. Problem solved when after I set the ACD, instead of the Macbook mon, as default display in the ColorSync.

Desmond

Does this mean only one of the monitors can ever be correct and you have to restrict viewing to that screen?

Fotrunately not. After the external cinema display was set as default display in colorsync both monitors work normally.

Well, even after you have set all settings correct you may still see a difference between the colors/lightness in Aperture and those in Photoshop due to the different color engines used for conversion. Aperture uses Apple CMM while Photoshop uses Adobe ACE. It is possible to set Photoshop to Apple CMM though. Unfortunately Aperture cannot be set to use Adobe ACE, which would be preferable, especially when images need to be exchanged with Photoshop for Windows users. Under Windows you cannot choose Apple CMM for color conversion. I mostly need to make some small adjustments to images exported to PSD from Aperture.