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Anyone know how one would go about simulating the film effect of "Bleach Bypass" in Adobe?
Thanks

Best I can figure,
1. Duplicate the file to a new file.
2. change the mode to CMYK
3. choose the K channel, and duplicate it to its own file.
4. While holding down the Shift Key, click/hold and drag that file onto your original RGB file.
5. Check the channels palatte to make sure that channel is on.

Experiment with curves or levels to play with the density.

Hope that helps.