Levels of brightness undo themselves after merging or rasterizing layers

Question

So I basically have a design that I want to put on clothes but the samples came out too dark so I wanna brighten them up. I did my thing and I'm now satisfied with the result, but the problem is that when I wanna merge the levels with the png layer they seem to undo themselves and the picture is dark again. I also have the feeling that when I undo the background layer which is a black background behind the png the levels also don't seem to work... Does anyone know how to fix this? Thanks in advance.

c.pfaffenbichler · Accepted Answer

I've tried it and now understand what you're saying, it works in some way, but the effect after exporting the file, makes it look weird with spaces of big black pixels. The design is indeed lighter, but the end result is not how it's supposed to be.

And about the transparency, it's barely impossible to post a design on a shirt with a black background without seeing the edges of the print. This makes it look squary and not how I want the design on the shirt. That's why I want it as an png cause the black of the shirt itself fills op places where there is no text.

I'll try something else, thanks a lot for your time and effort.

~~What »big black pixels«?~~

~~Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible?~~

~~Please provide the resulting file you have produced.~~

Edited: I had missed your last post.

D Fosse · Answer

Yes. You need to view at 100% to get a correct preview.

Here's the background:

Whenever something seems to change when merging layers, it's because you are not viewing at 100%. The merged result is correct. The preview can be misleading and incorrect if you're not viewing at 100%.

100% 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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