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C
Calce
Participant
November 22, 2023
Question

vertical gray strip

  • November 22, 2023
  • 3 replies
  • 1139 views

Hello everyone,'m working on a project in Photoshop 2024 where I need to align some photos, and not always, but one of the photos has a string of pixels (so far always vertical on the right side) that turns gray. I don't understand the reason. Can anyone provide me with an answer? Is it normal and why does this appen? 

    This topic has been closed for replies.

    3 replies

    c.pfaffenbichler
    Community Expert
    c.pfaffenbichlerCommunity Expert
    Community Expert
    November 27, 2023

    I suspect this is resampling-related. 

    In the screenshot the upper two Layers were scaled to 10%, the lower two were scaled to 10% as flat images.  

     

      C
      CalceAuthor
      Participant
      November 27, 2023

      Hi c.pfaffenbichler, you're right ! Thanks a lot!

      c.pfaffenbichler
      Community Expert
      c.pfaffenbichlerCommunity Expert
      Community Expert
      November 28, 2023

      For existing files you could use 

      • Layer > Layer Mask > From Transparency 

      • alt-click the Layer Mask’s  icon in the Layers Panel to select and show it 

      • Image > Adjustments > Threshold with an appropriate value

        J
        JayJR
        Participating Frequently
        November 25, 2023

        I've had a similar issue before when working in Photoshop. That gray pixel thing can be super annoying. It's usually due to some compression artifacts or glitches in the image file. Try saving the image in a different format or adjusting the compression settings when you export it.

        Kevin Stohlmeyer
        Community Expert
        Kevin StohlmeyerCommunity Expert
        Community Expert
        November 22, 2023

        @Calce you are zoomed in at over 2000%. What does this look like at 100%?

          C
          CalceAuthor
          Participant
          November 25, 2023

          Hi Kevin, if the string of pixels is one it has almost no effect (you see a light white line), when they become 3 or more they are much more noticeable. I'm attaching a screen of mosaic tiles that I'm working on now at 74%

          Trevor.Dennis
          Community Expert
          Trevor.DennisCommunity Expert
          Community Expert
          November 27, 2023
          quote

          Hi Kevin, if the string of pixels is one it has almost no effect (you see a light white line), when they become 3 or more they are much more noticeable. I'm attaching a screen of mosaic tiles that I'm working on now at 74%


          By @Calce

           

          You can only reallyy trust what you see when zoomed at 100% or 1:1.  You could be seeing a display glitch, but you need to test at 100% zoom ratio first, and maybe even save out to JPG, and open in another image viewer.

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