Photoshop: selection artifacts when cutting and pasting layer contents

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  • Updated 7 years ago
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  • (Edited)
When making a selection from a path using the pen tool and marquee tool then cutting the selection to a new layer and deleting from the original layer i.e. 'command shift J' , a very visible 1 px gap appears. This sometimes disappears when zoomed over 100% but not always. If this artefact is visible when choosing to print it gets printed, if it is visible when flattening the image , it gets flattened permanently into the image. This means that I have to make sure to be zoomed to a point where it disappears before I print. It also makes it very difficult to work when my image is full of gaps.
This is happening even with anti aliasing off when making the selection from the path.
I spoke to adobe support on the phone for over an hour and they could not resolve the issue. they even got me to reinstall which did not help. Please see the attached image which is zoomed at 100% and the artefact still appears.
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ZUZU

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  • angry, frustrated and hating photoshop

Posted 7 years ago

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Chris Cox

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That's a result of the antialiased edges, and the fact that you cut the content out and pasted it in the same location. (50% on top of 50% is not 100%) This is not a bug, just a result of the math involved.

You probably want to just copy the contents to a new layer (Command-J) instead of cut and pasting.
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ZUZU

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-I have anti alias disabled
- This issue only started happening yesterday
Actually i don't want to "just copy the contents(command j) at all. Instead as I said I want to cut and paste the contents (command shift j).

I am creating a torn page effect i.e. -
I am cut pasting from one layer onto another then the new layer is being warped to appear as though its torn and peeling down to reveal behind, therefore I do not want anything behind it. In order for the torn piece to be warped like this it has to be on its own layer. As far as I know this is the only way to create this effect . Please see attached image -
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Chris Cox

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Following the steps you gave, it'll always happen.
But I'll bet your feather value is non-zero,which will result in some fuzzy edge values.

Command shift J is not the same as cutting and pasting.

As long as you don't try to reuse a mask like that (matching edges), you should be fine.
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ZUZU

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Command j just copies the selection onto the new layer. The effect I am wanting to achieve will not work if I do what you are saying. How do I achieve the effect I need if I do not cut and copy.
Also why has this issue only just started occurring? I have used photoshop for a long time and never come across this issue so what you are saying contradicts my experience.