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Posterized images from E-PL5?

Discussion in 'Olympus Cameras' started by Replytoken, Jul 11, 2013.

  1. Replytoken

    Replytoken Mu-43 Hall of Famer

    May 7, 2012
    Puget Sound
    Ken
    I was briefly reviewing some sunset images that I shot the other night before culling and importing them into Lightroom. In the middle of the review, I noticed that several of the images were partially posterized in the shadows. Granted, I am viewing the embedded jpeg image in the raw files when I use FastStone Image Viewer for reviewing, but similar sunset shots from earlier in the week did not exhibit this problem. I will need to import the raw files and view them in the develop module of Lightroom for a closer examination, but as this is the first time that I have seen this problem, I was wondering if anybody else has had a similar experience. I'll try to post some sample images for comment when I get a chance.

    Thanks,

    --Ken
     
  2. jyc860923

    jyc860923 Mu-43 Hall of Famer

    Feb 28, 2012
    Shenyang, China
    贾一川
    Please do that Ken, I shoot sunset many times and I'm hoping can improve my skills too.:drinks:
     
  3. Replytoken

    Replytoken Mu-43 Hall of Famer

    May 7, 2012
    Puget Sound
    Ken
    Until I am able to actually analyze the raw file, I have clipped a 100% sample of the embedded jpeg for you to see.

    posterized_sample.

    It needs to be flipped 90 degrees, but this part of the image was the water reflection near the horizon line.

    --Ken
     
  4. Replytoken

    Replytoken Mu-43 Hall of Famer

    May 7, 2012
    Puget Sound
    Ken
    Good news. I quickly created a test catalog in Lightroom and imported the image. The raw file, and the preview created in LR look fine. I am not sure why the embedded jpeg posterized, but the ORF file seemed good. I hope to import the entire shoot this weekend, and will report back if there are any problems.

    --Ken
     
  5. jyc860923

    jyc860923 Mu-43 Hall of Famer

    Feb 28, 2012
    Shenyang, China
    贾一川
    maybe the embedded jpg was just a low quality preview purpose highly compressed image
     
  6. Replytoken

    Replytoken Mu-43 Hall of Famer

    May 7, 2012
    Puget Sound
    Ken
    It's possible, but I never noticed it when quickly previewing images outside of Lightroom before. When time permits, I'll see if I can review some older files.

    --Ken
     
  7. danimal

    danimal Mu-43 Supporter

    193
    Dec 31, 2012
    Oakland, California
    Dan
    It could also be a dynamic range issue with so many bright and dark areas.
     
  8. David A

    David A Mu-43 All-Pro

    Sep 30, 2011
    Brisbane, Australia
    +1. That would be my guess.
     
  9. PaulGiz

    PaulGiz Mu-43 Veteran

    231
    Jan 3, 2013
    Rhode Island, USA
    I am not near my camera now, but I believe there is an option for highlight and shadow adjustment in JPEG that compresses highlight/shadow detail. Is this enabled? Perhaps someone else can chime in with details.

    Sent from my HTC Sensation 4G using Mu-43 mobile app
     
  10. PaulGiz

    PaulGiz Mu-43 Veteran

    231
    Jan 3, 2013
    Rhode Island, USA
    G
    Gears/color WB/Shading Compensation.

    Try turning that off.

    P.
     
  11. Replytoken

    Replytoken Mu-43 Hall of Famer

    May 7, 2012
    Puget Sound
    Ken
    I checked the setting, and it was already off. But, it was a good suggestion, and a control setting that I was not aware of.

    Thanks,

    --Ken