RE: The MESS at the PRESS campaign
RE: The MESS at the PRESS campaign
- Subject: RE: The MESS at the PRESS campaign
- From: Henrik Holmegaard <email@hidden>
- Date: Tue, 6 Apr 2004 00:19:24 +0200
bruce fraser <email@hidden> writes :
>The relationship between the print and the proof is that the proof
>will show you what the document will look like on the printing
condition
>which the Dlink uses as source. If the document contains totally
incorrect
>separations, the proof will reflect that fact.
The device link assigns an assumed source and then converts into the
proof space. How does the person preparing the proof know that the
assumed source represents the objects in the page when that person did
not harmonize the objects in the page in the first place ?
Don't get me wrong, there is absolutely nothing wrong with a device
link conversion, if and only if all CMYK objects matching the data
model / color model of the first space in the linked sequence are also
in the _same_ CMYK space.
>but there is no such thing as fully-invertible color management
If I have an RGB image that I cross-render through my OutputIntent,
then I have my full inversion, though e.g. a monitor can only display a
limited number of colors at a time and may not be able to display
certain colors in the source RGB image.
I still have my RGB image in the state I wanted it to be when I
archived it. The world is not a perfect place, and color devices are
not able to render the same colors, so I may loose some on one device
and win some on another device. But I still have my original.
What's so profound about that ?
>Once you compress color to a specific gamut, whether based on a device
>or on a synthetic working space, you have performed a non-invertible
>operation-it's strictly a one-way trip.
So if I have an RGB image and print or proof on the fly without
manually converting (as for QuarkXPress, ye gads) I have a
non-invertible operation ?
Well, are we not coming to the conclusion that there is no practical
difference between an ICC device profile, an ICC device link profile
and a proprietary device link profile ?
Think I'll hop along and have a look at BBC World, could be things are
turning topsy turvy outside the world of (ICC?) color management, too
-:).
Thanks,
Henrik
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