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Re: preview/photoshop
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Re: preview/photoshop


  • Subject: Re: preview/photoshop
  • From: Doreen Pearsall <email@hidden>
  • Date: Thu, 13 Jan 2005 14:39:07 -0800

Ross,

sorry to hear you were having the same problem....when I tried using the default display or an Optix XR 1.8 gamma profile, the images were closer to being the same but still different....

I reinstalled PS yesterday and deleted all colorsync and PS preference files, caches, plists and whatever else I thought I could --- didn't seem like it was fixed yesterday but is working today --- must have needed an additional reboot.....so looks like it might be deleting the colorsync preferences and cache files that fixes the problem.

doreen

On Jan 13, 2005, at 2:16 PM, Ross Peterson wrote:

Doreen, John,
My system is doing exactly as Doreen has described as we speak. The mismatch in images side by side in PS and Safari/Preview, as Doreen has noted, is too great to be attributable to conversion engine disparities. The curious thing is they DO display very close to identically if I switch to the default Cinema Display profile. AND, if I use an Optix XR Pro built display profile with a 1.8 gamma correction they also display correctly. I'm not smart enough to know why that would be.


I went to Jason Sewell's site and followed his instructions to delete the suspect preference files and it worked. My views are again nearly identical in PS and Safari/Preview. I did not lose my preference settings in PS so I submit that it is an Apple issue, NOT a PS issue.

Sure would be nice to know what causes it though.......

Ross


On Jan 13, 2005, at 1:30 PM, Doreen Pearsall wrote:

Photoshop always uses ACE as the CMM when performing display compensation. Photoshop also uses Relative Colorimetric rendering to the display.


Does that mean the Photoshop engine and intent conversion options do not apply when performing display compensation?

In any case, the color differences I am talking about are not the slight changes that are visible when using different conversion engines. I was not able to reproduce the distinct color shifts I am getting on another mac user's system -- even when my profiles were used on that system. Also, when I used that mac user's display profile on my system -- while my overall color was off -- I still had the distinct color shift between preview and photoshop.

What is stranger is that all is working fine this morning.....this is the second time I have had this problem and no amount of sleuthing over a period of weeks helps me discover the source.....then suddenly it starts to work one day. Last night when I stopped working I definitely had the problem and when I woke up this morning it was gone ---- so I truly have no idea what causes it or what makes it stop.

doreen



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  • Follow-Ups:
    • Re: preview/photoshop - here's a possible solution!
      • From: Claudio Hoecker <email@hidden>
References: 
 >preview/photoshop (From: Ross Peterson <email@hidden>)
 >Re: preview/photoshop (From: Chris Murphy <email@hidden>)
 >Re: preview/photoshop (From: Doreen Pearsall <email@hidden>)
 >Re: preview/photoshop (From: Ross Peterson <email@hidden>)

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