Re: Print differences after profiling
Re: Print differences after profiling
- Subject: Re: Print differences after profiling
- From: Steve Upton <email@hidden>
- Date: Wed, 23 Feb 2005 14:12:58 -0800
At 2:28 PM -0500 2/23/05, Roger Breton wrote:
> > Try looking at how the printer is setup in the ColorSync utility. There may be
>> a profile associated with it on one machine and not the other
>>
>> Regards,
>>
>> Steve
>
>Why would (could) that be a factor, Steve? Isn't ColorSync
>"profile-agnostic"?
not sure what you mean here... yes. But a profile may be associated with the printer on one machine and not the other..
>
>Thats got me kind of concerned Steve, its an area to me that in the past has
>promised lots but delivered little and I first need to figure how/why
>it could alter the output if Im printing from PwPreview and using Adobe CMS.
Ah, OK, then it probably isn't it.
>the way I understand this utility is that:
>
>Preferences give you the option to specify a default profile to a file if
>one is missing but only supported by certain apps probably that I don't own.
right
>Devices Here you can assign alternative profile that will act in
>place of the registered factory one??
>this has always had me a bit confused this one!
right - in the case of the driver and/or ColorSync determining that a conversion needs to happen it will use the supplied profile as the destination.
>Filters At the time I thought this might be the answer to using
>colour management from any application. I could never get it right
>and don't know anyone else who could either. Quartz filters seem
>like a far too complicated route to take to implement user CMS.
yeah... ya think it's cool but.... and there's no docs.... so we all collectively put it aside to think about later... like perhaps Tiger....
My understanding of Photoshop printing today is that it does not include a profile in the print stream. As a result, ColorSync will assign the Generic RGB profile as the source which is potentially dangerous as hell but, in the Epson driver you also have the "Color Management" tab which allows you to turn color management "off". I think this actually lets ColorSync choose GenericRGB as the destination so no conversion occurs.
The thing that has me really nervous is that it seems the only non-color-managed path through the OS 10.3 print system is to rely on source and destination defaulting to the same profile so no color management occurs...... dicey at best
Regards,
Steve
________________________________________________________________________
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
o ColorThink ColorValet and now... ColorForums.com
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