Pop Photo admits it made mistake in 5D test.

Discussion in 'Digital SLR' started by John A. Stovall, Mar 19, 2006.

  1. Well they screwed it.

    http://www.popphoto.com/article.asp?section_id=5&article_id=1881&print_page=y

    "Plug in my findings for the EOS 5D and you get the following:

    ((2130D+2020D)/2 +2310H +2220V= 2200 average lines

    That's more than enough to qualify the EOS 5D for an Excellent
    resolution rating.

    When we're wrong, I'll admit it
    Unfortunately, 2310Hx 2220Vx 2080 Diagonal lines weren't the figures
    listed for the EOS 5D in our December, 2005 test report. Those figures
    were 2050V x 2000H x 2025 Diagonal, for an average resolution of 2030
    lines. That's 170 lines less, or about 8% less resolution. Why the
    difference? It seems that the Pop Lab technician who ran the tests on
    the EOS 5D (and the Nikon D2X, also about 10% lower reported
    resolution compared to recent tests) made a measurement error that
    skewed the results downward. To prevent this from happening in the
    future, we have added safeguards to our testing procedures.

    Why bother correcting this 8% error in tested resolution for the EOS
    5D, when it didn't actually lower the camera's Excellent resolution
    rating? Because little errors have a way of snowballing into bigger
    ones—which is exactly what happened when I used those inaccurate
    resolution figures to compare the new D200 to the EOS 5D and Nikon
    D2x. In that report, I noted that the D200's average resolution of
    2075 lines was equal to the D2X, and slightly higher than the EOS 5D.
    In fact, there's a much larger margin between the D200 and D2X (which
    has been updated to 2440 lines). And at 2200 lines, the EOS 5D shows
    an obvious advantage in resolution over the D200. All other test
    results remain the same as reported, with the D200 showing higher
    color accuracy than the EOS 5D."


    --

    "I have been a witness, and these pictures are
    my testimony. The events I have recorded should
    not be forgotten and must not be repeated."

    -James Nachtwey-
    http://www.jamesnachtwey.com/
     
    John A. Stovall, Mar 19, 2006
    #1
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  2. John A. Stovall

    Kinon O'cann Guest

    Kinon O'cann, Mar 20, 2006
    #2
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  3. John A. Stovall

    m II Guest


    They must have taken a lesson from the pharmaceutical industry.




    mike
     
    m II, Mar 20, 2006
    #3
  4. John A. Stovall

    nrh Guest

    nrh, Mar 20, 2006
    #4
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