Re: Photoshop CS4 DeviceLink CMM Engine
Re: Photoshop CS4 DeviceLink CMM Engine
- Subject: Re: Photoshop CS4 DeviceLink CMM Engine
- From: Marco Ugolini <email@hidden>
- Date: Tue, 28 Apr 2009 11:46:04 -0700
- Thread-topic: Photoshop CS4 DeviceLink CMM Engine
In a message dated 4/28/09 1:14 AM, Koch Karl wrote:
> Joseph, Marc,
>
> let me try to explain:
> The differences between the Adobe and Apple CMMs and the DeviceLink
> CMM result from a bug (or should I call it a feature) in Adobe
> Photoshop.
> When you convert from one color space into another one with a
> DeviceLink in Photoshop's Convert to Profile Advanced Conversion
> Options, Photoshop does NOT assign the destination profile as the new
> document profile. You have to do that manually in order to get the
> correct appearance on your (calibrated and profiled) monitor.
> In contrast, basICColor demon reassigns the destination profile
> automatically so that you have the correct appearance immediately
> after the conversion the same as with the other CMMs after assigning
> the profile manually.
It seems that the device link conversion feature in Photoshop CS4 is still a
first step, a rough introduction to the functionality, with much room for
improvement -- which hopefully will come.
One question I have, though, is the following: do *all* device link profiles
contain precise information on the destination color space, or a copy of the
destination profile within them? If they don't, how would Photoshop know
which profile to assign post-conversion, if and when it should be made
capable of doing that?
Marco Ugolini
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