Hello- I work in PSB files with many layers. When I copy merged (cmd, shift c) and paste within the same file (as a top layer), i get a significant color shift (it appears mostly a lot lighter). As its pasted back in the same file, there should no profile conflict, right? Im in working RGB, but it happens also in adobe rgb, CMYK etc. It seems to only happen in the files with many layers. Any ideas?
I'm guessing this is an image that has very noisy and/or binary elements? View at 100% to get a correct preview before merging.
Whenever something seems to change when merging layers, it's because you are not viewing at 100%. The merged result is correct. The preview is misleading and incorrect.
100% in Photoshop has nothing to do with size. It means one image pixel is represented by exactly one physical screen pixel.
For performance reasons, all blending and adjustment previews are calculated on the on-screen version of the image. When you are zoomed out, that means a resampled and softened version of the image. Pixel levels are averaged out. You get a lot of intermediate values that aren't there in the full original data.
When you merge, commit an adjustment etc, the numbers are re-calculated on the full original data, pixel for pixel.
Viewing at 100% avoids all this and renders the whole issue moot. You see every pixel before and after, and so nothing changes.
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