Sony Carl Zeiss 135 f/1.7 - too sharp for the Maxxum 7D

Discussion in 'Sony' started by Alan Browne, Jul 14, 2007.

  1. Alan Browne

    Alan Browne Guest

    Wide open (f/1.7, 1/800, open shade, [email protected], from RAW, Maxxum 7D, ISO 100)

    Unsharp maks... note the staircase in the middle, back petal. This is
    apparent in the RAW file as well. See last linked image [W/O sharpening])

    Downsampled
    http://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234SML.jpg
    201K

    Full size
    http://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234.jpg
    761K

    Section at full size
    http://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234Sect.jpg
    282K

    and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

    (Note: focusing this thing is a challenge).

    Is this lens *too* sharp for a 6 mpix?
    http://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234Staircase.jpg

    Cheers,
    Alan.
     
    Alan Browne, Jul 14, 2007
    #1
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  2. Alan Browne

    RichA Guest

    It still won't be enough to make full use of the lens, but it would be
    better.
    Of course, if you stop down the lens to f8 and the images are sharper
    centrally, then the camera is not at fault
    and the lens isn't capable of supporting 6 megapixels wide open.
     
    RichA, Jul 14, 2007
    #2
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  3. Wolfgang Weisselberg, Jul 15, 2007
    #3
  4. Alan Browne

    Alan Browne Guest

    No, the folder is correctly re-named to f1.8 instead of f1.7
    See my other post, the reason for the staircase lay in the CS3 RAW
    import which I'm less used to than the one in Elements 3.
    Added a "NoStaircase" v. as well.
     
    Alan Browne, Jul 15, 2007
    #4
  5. Alan Browne

    Paul Furman Guest

    Paul Furman, Jul 17, 2007
    #5
  6. Alan Browne

    Alan Browne Guest

    Alan Browne, Jul 17, 2007
    #6
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