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SubstituteWithPreview vs pixel math formula
I'm finally finding time to dedicate to the material on your website. It's great and I'm learning a lot. One comment about the SubstituteWithPreview script vs the pixel math formula you created. I understand and agree with the idea that you want to maintain the image processing history, I think a simpler approach would be to use the SubstituteWithPreview script and then a simple "FinalView" copy in pixel math back to the original image. You achieve the same result without the manual step of remembering the coordinates, modifying the formula and then executing pixel math (although that was educational).
Either way, you do lose the details of what you DID to the preview, which would be nice to maintain. But that's a different issue.
If I missed something, please let me know.
- Ladd