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nboyer1
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Odd Maze Pattern with Olympus E-P1 & DNG Converter

Aug 24, 2009 4:45 PM

Hello.  I wanted to report an odd maze pattern when I convert a raw file from the Olympus E-P1.  It seems to happen when using wide angle lenses (Zeiss 21/4.5 C Biogon and Zeiss 25/2.8 Biogon.  The maze pattern is very prominent in the right corners of the image attached, where some softness is exhibited by the lens.  Anyone else experiencing this?  I do not get these patterns when converting with Olympus Studio or CaptureOne.  -Norm

 

http://farm3.static.flickr.com/2610/3854306906_c9b65e9e3e_o.jpg

 
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  • Currently Being Moderated
    Aug 24, 2009 7:54 PM   in reply to nboyer1

    I have studied your images, Norman. Thanks for providing them. A fix will be provided in the next update of LR. (In the meantime, if you have CS4, you can use Camera Raw 5.5 Release Candidate to process your E-P1 images without these artifacts. If not, please wait for the next update of LR.)

     
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    Aug 25, 2009 2:20 PM   in reply to nboyer1

    Rather soon. Keep in mind that we average about 4 updates per year, and that

    we usually synchronize CR and LR dot updates. This should help give you an

    idea of when to expect the next LR update.

     

    Cheers,

    Eric

     

     

    Thanks Eric.  I look forward to the LR update.  Can you offer a rough time

    estimate it will become available?

     

     
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    Oct 31, 2009 9:28 AM   in reply to MadManChan2000

    Just found this elder post that interested me. I can report Maze Artifacts also when using the Panasonic GF-1 with adapted lenses in combination with RAW processing in Lightroom 2.5 and Photoshop CS4.

     

    Lenses used are the Cosina Voigtlander Heliar 15 mm and a Leica Summicron-C 40 mm.

     

    Also with raw conversion in Ligtroom 3 Beta the Maze Artifacts still exist however on screen a little less pronounced. After converting to TIF it is becoming clearly visible again. Artifacts only exist in the righthand corners, more so on topside.

     

    So far I found raw conversion from Raw Developer doing a better job with almost no artifacts visible at 100% so this seems to me a problem that

    can be solved in the raw conversion.

     

    There is no difference in converting the original raw file or first convert to DNG followed by further processing.

     

    Will there be a solution in the final version of Lightroom 3? Or is there another solution right now?

     
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    Oct 31, 2009 7:01 PM   in reply to Herb 19

    Herb 19, can you please send me sample raw files (.RW2 files) taken with these lenses that show the problem?  You can use YouSendIt.com with a target email address of madmanchan2000@yahoo.com.

     

    Thanks,

    Eric

     
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  • Currently Being Moderated
    Nov 1, 2009 1:58 AM   in reply to MadManChan2000

    Hello Eric,

     

    Many thanks for your reply. I sent two RW2 files; 295 made with the 

    Voigtlander Super Wide Heliar 15mm II at f/11, and file 299 with the 

    Leica Summicron-C 40 mm at f/8.

    The maze artifacts are most visible in the top righthand corner. The 

    longer the focal point of the lens the less visible seem the artifacts.

    Although I have seen posts on Flickr that the artifacts can change 

    with the same focal point lenses of different brands. A 35mm Zeiss 

    showed maze artifacts while a 35 Leitz did not.

     

    I had some more interesting pictures with nice blue skies but these 

    had already been converted to DNG (still showing strong maze artifacts).

    If I can supply any more files or information please do not hesitate 

    to ask.

     

     

    Best regards,

    Herb

     

     

    Op 1 nov 2009, om 03:01 heeft MadManChan2000 het volgende geschreven:

     

    Herb 19, can you please send me sample raw files (.RW2 files) taken 

    with these lenses that show the problem?  You can use YouSendIt.com 

    with a target email address of mailto:madmanchan2000@yahoo.com.

    >

    Thanks,

    Eric

    >

     
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    Nov 2, 2009 2:27 PM   in reply to Herb 19

    Thanks, Herb. Very helpful.

     

    Eric

     
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    Nov 19, 2009 10:52 AM   in reply to MadManChan2000

    Hello Eric,

     

    Just installed Lightroom 2.6 RC and Adobe DNG converter and Camera Raw update 5.6.

    I loaded my previously reported maze artifact files, both as original raw file and converted to dng, and all looks terrific now!

    No more artifacts. Obviously you have done an amazing job at Adobe.

    Also after converting the original raw file to dng, the dng file seems to have a little less noise although at some times with a very slight loss of sharpness. Excellent anyway.

    I would love to have some insight in how you fixed the issue of maze artifacts in the corners of the images.

     

    The dng converted files can also be processed now to good effect in Capture One 5.0 without artifacts.

    In Raw Developer the original raw file and the converted dng file still show some artifacts at 200%. Adobe definitely improved on this.

     

    Many thanks!,

    Herb

     
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  • Currently Being Moderated
    Nov 19, 2009 12:49 PM   in reply to Herb 19

    Hi Herb,

     

    Thanks for the feedback! Glad to hear the processing is improved. I appreciate that you submitted test files - they helped.

     

    Eric

     
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