Re: same values, different tone???
Re: same values, different tone???
- Subject: Re: same values, different tone???
- From: Andrew Rodney <email@hidden>
- Date: Fri, 08 Jun 2001 09:54:03 -0600
on 6/8/01 12:52 AM, glenn campbell at email@hidden wrote:
>
first question, why do the images look different but the patches on the
>
greytag macbeth color checker have the same rgb values?
Assign profile doesn't change the numbers in a file, that's why. Assign
profile changes the meaning of the numbers for Photoshop 6 so with that new
information, you get an updated preview based on the new meaning.
>
second, if i open the same file and check the box in the missing profile
>
dialog -then convert document to the working rgb- why are the readings
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from the same patches 3-4 higher blue?
Because now you HAVE changed the numbers by asking Photoshop 6 to convert
from the source space (the profile you assigned above) to your Working
Space. A conversion changes the meaning and the numbers.
>
i am trying to figure out if it is ok to work in foreign working spaces,
>
not convert to my space (colormatch rgb) or should i convert everything
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to colormatch.
Convert to a Working Space if your aim is to edit the file for eventual
output. IF you are simply wishing to do non color/tonal work (spotting is an
example) and you don't know what Working Space you eventually want, it's
fine to edit in the input space and archive. This is a good idea when you
are supplying files to others and you don't want to force a certain Working
Space on them. They can convert to whatever space they wish. This is usually
only a situation for people in service bureaus who want to provide the raw
data from the capture device but still want to sharpen, spot, crop the file.
If you are the person doing the editing, then convert to your Working Space
of choice and go from there.
Andrew Rodney