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neile99016700
Participant
December 8, 2018
Answered

How to repair specific banding on a digital photo

  • December 8, 2018
  • 6 replies
  • 36946 views

Hey, this isn't the normal kind of color banding. We think it possibly has something to do high speed sync with the electronic shutter at 1/8000 shutter speed. It seems the electronic shutter at a high shutter speed in really bright conditions will make the banding. I wasn't aware that this was happening while taking the photos...and now I have these irreplaceable images from a vacation that are essentially ruined. I was just wondering if anyone else has experienced this or has been able to repair this somehow so that I might keep these images. I'm going to attach one of the images as an example.

    Correct answer Norman Sanders

    (Click on image to see @ 100%)

    Change the mode to Lab Color

    Choose the L channel

    Filter > Blur >Surface Blur Radius 9.  Threshold 15

    Return mode to RGB

    6 replies

    D
    Donna5ECC
    Participant
    August 11, 2020

     

    This is what happened when I tried this method - didn't work for these shots :(( 

    davescm
    Community Expert
    davescmCommunity Expert
    Community Expert
    August 11, 2020

    Which method, there are two described in this thread?

    Dave

    G
    Galini5FA7
    Participant
    March 9, 2024

    Hi Dave, 
    I tried to use your high/low freq method but it doesnt seem to work.
    is it the banding? or am i doing something wrong?
    Really need your help here 
    thank you

    Norman Sanders
    Norman SandersCorrect answer
    Legend
    December 8, 2018

    (Click on image to see @ 100%)

    Change the mode to Lab Color

    Choose the L channel

    Filter > Blur >Surface Blur Radius 9.  Threshold 15

    Return mode to RGB

      J
      jdanek
      Inspiring
      December 8, 2018

      ( Filter > Surface Blur )  Nice!  Worked great on the white hat, too.

      davescm
      Community Expert
      davescmCommunity Expert
      Community Expert
      December 8, 2018

      You may be able to reduce the effect like this:

      Make two copies of the image layer.

      Name the lower "Low Frequency"

      Name the upper "High Frequency"

      Select the low frequency and apply a  gaussian blur of around 6px

      Select the high frequency layer and goto menu Image - Apply Image
      Set the layer to use as "Low Frequency"
      Set Blending mode to subtract
      Scale 2

      Offset 128

      Click OK

      Set High Frequency layer blending mode to Linear Light

      Put the high frequency layer in a smart object and use High pass adjusting the radius to keep the contrast detail but remove the banding
      Invert the Smart filter mask so all is black

      Use a soft brush to paint on the mask until the banding goes


      I added a masked copy of the original and lightly painted back in over any edge "ringing"

      Not perfect, it has softened the skin, but IMO easier on the eye than the original banding

      Dave

        Kimjayphoto
        Kimjayphoto
        Participating Frequently
        October 25, 2019

        Hi Dave,

        I figured out most of it. I'm using a brush to paint on the high pass layer, but nothing is happening. What am I missing here.

        Kimjayphoto
        Kimjayphoto
        Participating Frequently
        October 25, 2019

        Hi

        You will only see the smart filter mask after you click OK on the High Pass filter

        Dave


        Righto. I actually changed my question, cause I figured that part out. 

         

        I'm now painting on the high pass filter with a soft white brush, but nothing is happening. I attached a new screenshot above. 

        c.pfaffenbichler
        Community Expert
        c.pfaffenbichlerCommunity Expert
        Community Expert
        December 8, 2018

        Reminds me of this thread:

        Re: How to remove horizontal banding caused by LED lighting

        D Fosse
        Community Expert
        D FosseCommunity Expert
        Community Expert
        December 8, 2018

        Interesting. What's the fill light, specifically? On camera flash? Some kind of LED? That's where it is, not the background.

        I've noticed with my Sony that the silent shutter tends to give these interference stripes in LED and fluorescent lighting. That's because the sensor is scanned, not read all in one. I just need to be careful to avoid a certain shutter speed range, and adjust ISO if necessary.

        Fixing it is possible, but takes a lot of time. No magic button.

        Abambo
        Community Expert
        AbamboCommunity Expert
        Community Expert
        December 8, 2018

        that looks like a lot of photoshopping. I do not know any point and click solution for this.

        Discussion successfully moved from Adobe Creative Cloud to Photoshop

        ABAMBO | Hard- and Software Engineer | Photographer
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