Density reversals in gray ramp
Density reversals in gray ramp
- Subject: Density reversals in gray ramp
- From: "James B. Reswick, Jr." <email@hidden>
- Date: Tue, 13 Apr 2004 17:45:11 -0700
Hi:
If I create a new 16-bit empty image in L*a*b* space, say 2" x 24", draw a
black gradient across it, and then soft proof it with my custom CMYK
profile (all in Photoshop CS), the gray ramp looks pretty good.
If I do the same process as above of creating the empty image and applying
the gradient, only start with my color space as, say, ProPhotoRGB instead
of L*a*b* space and do the soft proof with the same CMYK profile, I get
gradient reversals in the last third of the gray ramp.
If I take the same ProPhotoRGB gradient image as mentioned above, and
convert it into L*a*b* space, and then soft proof it with my custom CMYK
profile, although it doesn't look exactly the same as in my first example
when I started in L*a*b* space, I don't see the reversals.
Any idea what's going on?
Thanks,
Jim
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