RE: Difference blend mode has changed?
RE: Difference blend mode has changed?
- Subject: RE: Difference blend mode has changed?
- From: Roger <email@hidden>
- Date: Thu, 06 Aug 2009 09:42:00 -0400
Andrew,
I was looking for something a little less involved but I confess it's worth
trying.
Thank's so much / Roger
>
> In Photoshop, open both documents and the go to Image > Apply Image.
> Set whichever image isn't listed as the target as the source.
> Set the Channel as RGB. Set the Blending to Subtract, with an Opacity
> of 100, a Scale of 1, and an Offset of 128.
> If the images were truly identical, every pixel in the image would be
> a solid level 128 gray. Pixels that aren't level 128 gray are
> different by the amount they depart from 128 gray which is useful. You
> can use Levels to exaggerate the difference, which makes patterns
> easier to see. With the Offset of 128, its far easier to see
> differences.
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