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Thread: DXO gives the edge to GH1 sensor over GH2

  1. #1
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    DXO gives the edge to GH1 sensor over GH2

    Panasonic Lumix DMC GH1 [Add to selection]
    Panasonic Lumix DMC GH1
    DxOMark Sensor Scores
    Overall Score

    64
    Portrait
    (Color depth)

    21.6 bits
    Landscape
    (Dynamic range)

    11.6 Evs
    Sports
    (Low-Light ISO)

    772 ISO




    Panasonic Lumix DMC GH2 [Add to selection]
    Panasonic Lumix DMC GH2
    DxOMark Sensor Scores
    Overall Score

    60
    Portrait
    (Color depth)

    21.2 bits
    Landscape
    (Dynamic range)

    11.3 Evs
    Sports
    (Low-Light ISO)

    655 ISO

  2. #2
    Administrator Bob's Avatar
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    Re: DXO gives the edge to GH1 sensor over GH2

    Those ratings, besides being meaningless, are about as close as you can get.
    -bob

  3. #3
    Senior Member Amin's Avatar
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    Re: DXO gives the edge to GH1 sensor over GH2

    I don't find the GH2 DxOmark results to be very disappointing. A little disappointing because some of the JPEG samples looked so good. However, the GH2 results were barely different than GH1, and we should bear in mind that the GH1 DxOmark results are very good.

    Based on sensor size alone, a Micro 4/3 sensor at native aspect ratio is predicted to have a 0.54 stop S/N deficit compared to 1.6X (Canon) APS-C (at native aspect ratio) and a 0.72 stop S/N deficit compared to a 1.5X (Sony/Pentax/Nikon) APS-C sensor. If you compare the GH1 or GH2 performance to most APS-C sensors on DxOmark, you'll find it very competitive on a per-sensor area basis. That said, the new K5/D7000/A650 is very impressive, particularly with regards to dynamic range at base ISO.

    If Panasonic was able to very nearly match the signal to noise and dynamic range of the GH1 and at the same time eliminate or significantly address the GH1 banding issue, then I think they have done well with the GH2 sensor.
    Last edited by Amin; 5th November 2010 at 14:51.

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