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afterthought
afterthought
Inspiring
January 22, 2022
Question

Blur and gradient banding since 23.1.1 release

  • January 22, 2022
  • 11 replies
  • 2161 views

Something happened with blur and gradient algorithms in the new version of Photoshop (23.1.1, Windows 10). Gaussian Blur is producing some intense banding at 16 bit:

 

The screenshot was brightened to show the issue, which is mostly visible in the shadows.

 

I tried disabling GPU, updating my GeForce RTX 2080 Studio drivers and everything else, really.

 

There are reports about gradient banding too:

https://www.reddit.com/r/photoshop/comments/sa6bt2/gradient_banding_intensified_recently_has_this/

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    davescm
    Community Expert
    davescmCommunity Expert
    Community Expert
    January 22, 2022

    I've not seen any new banding in blur or gradients in 23.1.1 but:


    1. I use 10 bit monitors (Eizo CS2731s)  and the display chain is set up to 10 bit/channel (also labelled 30 bit) in Photoshop, in the NVidia driver and the monitors are plugged using display port connectors. Banding will be visible on 8 bit monitors  but that is the nature of an 8 bit display chain and is not in teh 16 bit document.

     

    and

     

    2. I view at 100% zoom. If you zoom out to less than 66.7% then 8bits/channel are used for the on screen preview (even in 16 bit/channel documents). That is not new in this version. Photoshop has always worked that way.

     

    Dave

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