Olympus 4/3rds sensors still appear to be about 0.5 stops moresensitive than APS units

Discussion in 'Digital Photography' started by RichA, Dec 18, 2010.

  1. RichA

    RichA Guest

    This would have to be verified by using the same lenses on the Olympus
    as the other cameras, which is difficult but not impossible, M42
    lenses used at short distance would suffice with adapters. But what
    it does mean is that the Olympus can be used at 640 ISO and the APS at
    400 ISO and the Olympus should yield the same illumination level in
    images as the APS's. Which means (effectively) that the Olympus noise
    levels are lower than they appear in like-ISO tests between it and APS
    cameras.

    At 200 ISO, if you look at the upper right shoulder of the Bailey's
    bottle, you'll see lots of dust detail in the Olympus shot, but the
    others are too dark. The Canon shot is better than the Nikon or
    Pentax shots.

    http://dpreview.com/reviews/pentaxk5/page20.asp
    RichA, Dec 18, 2010
    #1
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  2. RichA

    Eric Miller Guest

    RichA wrote, inter alia:

    > At 200 ISO, if you look at the upper right shoulder of the Bailey's
    > bottle, you'll see lots of dust detail in the Olympus shot, but the
    > others are too dark. The Canon shot is better than the Nikon or
    > Pentax shots.
    >
    > http://dpreview.com/reviews/pentaxk5/page20.asp
    >


    The shots were taken at different times. Different amounts of dust
    appear in the images as a result. Things get dusty over time.


    Eric Miller
    www.dyesscreek.com
    Eric Miller, Dec 24, 2010
    #2
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  3. RichA

    Eric Miller Guest

    Rich wrote:
    > Eric Miller <> wrote in news:if126a$pen$1
    > @news.eternal-september.org:
    >
    >> RichA wrote, inter alia:
    >>
    >>> At 200 ISO, if you look at the upper right shoulder of the Bailey's
    >>> bottle, you'll see lots of dust detail in the Olympus shot, but the
    >>> others are too dark. The Canon shot is better than the Nikon or
    >>> Pentax shots.
    >>>
    >>> http://dpreview.com/reviews/pentaxk5/page20.asp
    >>>

    >> The shots were taken at different times. Different amounts of dust
    >> appear in the images as a result. Things get dusty over time.
    >>
    >>
    >> Eric Miller
    >> www.dyesscreek.com
    >>

    >
    > Boy, that is a stretch.


    If by "stretch" you mean fact. Sure.

    Eric Miller
    www.dyesscreek.com
    Eric Miller, Dec 27, 2010
    #3
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