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Anatector's plot thickens

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  • Anatector's plot thickens

    Dear Ross, Raj and any others who may be following along. I posted 2 weeks ago about an issue I was having with a very horizontal thin line of mis-recorded pixels appearing very rarely and seemingly randomly about 90% of the way toward the top of images from my EM-1 mkll--see most recent post prior to this one on this forum for an example image. I was past warranty but sent it in to Olympus anyway and for $US300 the have replaced the sensor, recalibrated everything and cleaned the camera body. I am due to receive it back tomorrow.

    But, in the meantime, I acquired Luminar, a new post-processing/imaging filing software package, and I am steadily processing through it all of my previously accumulated images, including those from the EM-1 that preceded my current EM-1 mkII. And, wouldn't you know it, but the same line, in the same place appears, equally sporadically and rarely, in images from the previous EM-1 also. Somehow, I just never noticed it. Luminar has the chops to remove the line from the affected images but I have to wonder what on Earth could cause this in two different camera bodies with different model sensors, with 16 MP in the EM-1 and 20 MP in he EM-1 mkII.

    Any ideas or suggestions will be most welcome--Dana Johnston (Anatector)

  • #2
    Have you used the same memory card for all these images?

    Ian
    Founder/editor
    Four Thirds User (http://fourthirds-user.com)
    Digital Photography Now (http://dpnow.com)
    Olympus UK E-System User Group (http://e-group.uk.net)
    Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire)
    Twitter: www.twitter.com/ian_burley
    Flickr: www.flickr.com/photos/dpnow/
    Pinterest: www.pinterest.com/ianburley/

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    • #3
      I'm going to say the SD card is the likely cause (or card reader). I would suggest getting a better Sandisk SD card, preferably SDHC II (300MB/s). It is good to go back with a more powerful raw editing software reviving some older photos. I use Capture One but still using CO10 although the latest release is now CO12.
      Ross
      I fiddle with violins (when I'm not fiddling with a camera).
      Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
      Lenses: M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens with MC-14, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
      Flashes: FL36R X2, FL50R, FL50.
      Software: Capture One Pro 10 (& Olympus Viewer 3).

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      • #4
        Fake or faulty memory cards could be the culprit; there is a good way of testing cards - I wrote an article on this subject last year:

        https://dpnow.com/guard-yourself-fro...-memory-cards/

        Ian
        Founder/editor
        Four Thirds User (http://fourthirds-user.com)
        Digital Photography Now (http://dpnow.com)
        Olympus UK E-System User Group (http://e-group.uk.net)
        Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire)
        Twitter: www.twitter.com/ian_burley
        Flickr: www.flickr.com/photos/dpnow/
        Pinterest: www.pinterest.com/ianburley/

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        • #5
          perhaps you could go thru the excercise of using another card in the mk2 by setting up the card slots to save to both simultaneously (with one card being the old possibly faulty one)..and then check for the line appearing again..i know it could be tedious to check, but in the long run you just might home into the problem..
          E510, E3, E-PL1,E620 ,E-5,OM-D
          50-200SWD, 14-54Mk1, 50mm f2. 35mm,70-300mm,12-60mmSWD,PL-25mm-1.4,150mm-F2
          MFT: 14-42(kit)/12mm/45mm

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          • #6
            Thanks you to all of you who responded with suggestions for the cause of the 'line' that appears ever so rarely in my photos with the EM-1 mkll and its predecessor, the EM-1. There have been a couple of new developments. I have now ruled out the possibility that they all occurred while using there same lens, a possible common denominator, as they appear in images that used the 12-40 PRO, 40-150 PRO and 300 Pro. So, with that ruled out the only possible common denominator I can imagine is the SD card. I bought a brand new SanDisk SDXC ll 64GB 300MB/s card for my most recent trip with the mkll so that can't be the problem since I never used that card with the EM-1. BUT, as you know, the mkll has two card slots and I had an old SanDisk 32GB SDHC 1, 90MB/s card in the second slot and I did indeed occasionally record to this card too. I think this HAS to be the problem as there is simply no other possible common denominator. But, since the problem occurs so rarely, it seems like it could take a good long while to prove this using Raj's suggested approach so I think I will just discard the suspect SDHC 1 card and replace it with another off the SanDisk 64MB SDXC ll card and hope I've solved the problem.

            Do you all agree with this analysis?

            And....thanks again so very much for your help with this.

            And, by the way, Olympus Services was excellent--responsive, fast and professional.

            Dana

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