A&P problem with LightRoom NDfilter

Discussion in 'Lifestyle' started by themolsen, Feb 19, 2009.

  1. themolsen

    themolsen New Member

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    Lightroom 2 ND Grad Filter

    It looks great as a 16-bit image, but I get pretty shitty color banding when in 8-bit color mode. What I don't get is that photos that have natural gradients don't show banding when in 8-bit mode.

    is this because my camera (D50) shoots in 12-bit color mode so going down to 8-bit isn't a big change. but going from the "artificial" 16-bit gradient in LR to 8-bit is?

    how can I correct this? is there way to export the image in LightRoom so it doesn't have banding as an 8-bit file?
     
    Last edited: Feb 19, 2009
  2. GlobeGuy

    GlobeGuy New Member

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    I have a D50 and use LR2 ND grad filter quite a bit, I never noticed any banding. Can you host a sample picture?
     
  3. themolsen

    themolsen New Member

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    I'm at work, so I can't access any of my full-size photos right now.

    It's really only annoying when the images are printed as 8x12...I use Mpix and they apparently print as 8-bit jpg's, even if you upload 16-bit tiffs.

    here's an 8-bit jpg..you can just barely make out the banding at this size.
    [​IMG]
     
  4. jared_IRL

    jared_IRL OT Supporter

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    after you apply the filter, convert to srgb through the 'convert to profile' menu, then change to 8 bit.

    should resolve the banding.
     
  5. themolsen

    themolsen New Member

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    it's already in srgb. Lightroom has a menu option to convert to 8-bit too? or should I just do that when I export?
     
  6. GlobeGuy

    GlobeGuy New Member

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    Ya, I can kinda see the banding. But it would be best to see it in full size, even if cropped. I don't think any of my skies that had LR2 ND filter applied looks like that.
     
  7. Perkwunos

    Perkwunos Dog Bones OT Supporter

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    Does anyone else have issues of their computer freezing when using the filter?
     
  8. GlobeGuy

    GlobeGuy New Member

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    The interface (grey line) is all choppy when using the filter but nothing gets frozen.
     
  9. jared_IRL

    jared_IRL OT Supporter

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    just did one for comparison - you see banding here?

    [​IMG]
     
  10. themolsen

    themolsen New Member

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    I can see a slight amount if I look reallllly hard, but I recognize it being from my laptop's monitor. on a different monitor, I don't think there would be any banding
    try upgrading to the latest version of LR. memory leak/freezing issues have been fixed
     
  11. themolsen

    themolsen New Member

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    where would I find the convert options in LR 2.3?

    It looks like its the nd grad in LR itself that causes the banding, because I can see it even before I export...
    [​IMG]

    it's even there in 16-bit files, too, I just noticed. just slightly less so

    wtf?
     
    Last edited: Feb 22, 2009
  12. themolsen

    themolsen New Member

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    anyone?
     

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