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Distortions occurring in the background of photographs.

Explorer ,
Feb 22, 2024 Feb 22, 2024

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Distortions occurring in the background of photographs.

Hello friends. I have a few questions.
1) What is the reason for these distortions in photo backgrounds?
2) What should be taken into consideration to prevent this from happening?
3) If there is corruption, how to fix it?

Thanks very much for your help.

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Community Expert ,
Feb 22, 2024 Feb 22, 2024

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@serkanmutan Im not seeing distortions in these images. Are they 8-bit RGB or 16-bit?

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Explorer ,
Feb 23, 2024 Feb 23, 2024

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@kevin stohlmeyer My problem is banding. It was in the images I shared. Maybe I didn't choose the right frames. Thanks a lot.

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Community Expert ,
Feb 22, 2024 Feb 22, 2024

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Do you mean the banding or stepping in the color gradients? Sometimes that’s a consequence of having only 8 bits (256 levels) in each color channel. This can be in the file or on the display.

 

To eliminate it in a file, try setting Image > Mode to 16 bits/channel. If that is not practical, try enabling the Dither option for the gradient.

 

Photoshop-gradient-dither.jpg

 

If the file is known to be smooth and the problem is only on the display, first make sure the display is properly profiled, and if hardware calibration is possible, also calibrated.

 

If all of the above is still not enough, and it is an undithered gradient at 16 bits/channel, try opening Preferences (called Settings on macOS), click Technology Previews, and enable Precise Previews for 16-bit Documents. This fixes a problem Photoshop has long had with gradient banding. Greg Benz covers it in one of his videos:

 

How to eliminate false banding in Photoshop (article)

 

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Explorer ,
Feb 23, 2024 Feb 23, 2024

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thanks @Conrad C  

Yes, my problem is definitely banding. I will check out the link you shared.

thanks

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