What it new Nikons and Canons feature sensor cleaning?

Discussion in 'Nikon' started by RichA, May 25, 2005.

  1. RichA

    RichA Guest

    Like Olympus? I'm wondering how many will change
    bodies because of it? I've seen some digital shots that
    definitely indicate "speckles" caused by sensor window
    dust. This isn't suprising since any dust specs you
    see on the sensor are much larger than the average pixel size of
    the sensors. Sensor window cleaning isn't difficult, or frightening,
    but having to do it is just another chore.
    There is also the fact that the multicoatings used on the windows
    are not as resilient as the glass itself when it comes to abraision.
    Some multicoatings are very soft relative to the kind of dust that
    can accumulate. The old style single-layer magnesium fluoride
    anti-reflection coatings were harder, more resistent to scratching,
    but they generally don't use them as much because the anti-reflection
    properties of the old coatings are good enough for modern optics.
    There are some very hard multiple layer anti-reflection coatings
    available today, but as far as I know, they are only used on 1st
    surface mirrors rather than lenses.
    RichA, May 25, 2005
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  2. RichA

    Alan Browne Guest

    It's a wonderful idea and from all accounts seems to work. I don't know
    to what degree it is patent protected and to what degree the others
    would pay a licence.
    Mpix for Mpix? Very few, I would guess, but it would help entice people
    to move from 6/8 to 10/12 (or whatever the next Mpix step is).

    I've seen one poster (dpreview or Minolta.yahoo) suggest that Minolta's
    A-S helps remove dust from the senor. I suppose it might help for some
    dust (heavier, less 'sticky') but some kinds of dust will simply adhere
    at such low shake frequencies (or just getting bumped here and there
    would cause more dust loosening than the A-S could).

    I'd love it if Minolta adopted the ultrasonic cleaning system.

    Alan Browne, May 25, 2005
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