5D, some risk in cleaning sensor?

Discussion in 'Digital SLR' started by Rich, Dec 18, 2005.

  1. Rich

    Rich Guest

    According to the Canon white paper on this camera, this camera's
    sensor is fronted by a dichroic filter. This implies the filtering
    coating is on the front of the sensor's coverglass. If this is the
    case, the coating on the glass could be softer than normal glass.
    Much of the dust we have in the air is quartz, which is much harder
    than regular glass and harder still than any optical coating.
    Cleaning it should be a process of removing as much dust as possible
    with air pressure rather than initially using a swab initially which
    could "drag" dust particles across the surface, sleeking or scratching
    the coating. It's not clear whether the coating is on the outside
    or inside of the glass cover. However, some kind of anti-reflection
    coating is likely on the outside of the cover if the dichroic coating
    is on the backside and even anti-reflection coatings must be treated
    more carefully than glass.
    The process should be what it is with all precision optics;
    1. Blow off as much particulate matter as possible.
    2. Use a soft brush to carefully remove any adhering via static
    charges.
    3. Use a cleaning solution and a swab as a last resort.

    Also, material that makes it way onto the coating other than dry dust
    (organic particles, whatever) can contain an acidic component that
    can permanently etch or degrade coatings. That should be removed
    immediately.
    --Rich
     
    Rich, Dec 18, 2005
    #1
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  2. Rich

    G.T. Guest

    Typical alarmist and/or Canon-bashing troll by the Dick. Since 99% of
    dust can be removed with minimal air pressure and the other 1% that
    might by sticky is probably also soft, who cares?

    Greg
     
    G.T., Dec 18, 2005
    #2
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  3. What do you care? You don't own any kind of camera.
     
    Randall Ainsworth, Dec 18, 2005
    #3
  4. Rich

    Gormless Guest

    Get a camera. See what happens for your very own self.
     
    Gormless, Dec 19, 2005
    #4
  5. Rich

    Rich Guest

    Some people have stated they do not blow the dust because they
    believe it simply re-distributes it throughout the camera. That's one
    issue.
    -Rich
     
    Rich, Dec 20, 2005
    #5
  6. Rich

    Rich Guest

    No, you are right. I use a camera obscura and leave it exposing until
    the image someone infuses itself onto plain paper.
    -Rich
     
    Rich, Dec 20, 2005
    #6
  7. Rich

    Rich Guest

    PPSSSSTTTTT: "Canon attack group, you have your target, ENGAGE!!!"
    PPPSSTTTTTT: "Roger that, sir!"
     
    Rich, Dec 20, 2005
    #7
  8. Rich

    Gormless Guest

    I admire your apparently indestructibly thick skin.
    Of the three replies to your post no fewer than three of them were negative
    towards you.
    This is nothing new with respect to your timelessly fascinating postings to
    this group.
    Why don't you just take the hint and stay in rec.playthings.lego or
    alt.clueless.twats or wherever it is you'd fit?
     
    Gormless, Dec 20, 2005
    #8
  9. Rich

    Rich Guest

    Because this isn't rec.photo.canonlovers, at least not yet.
    I never tell people where to go on the net, (unlike your dictatorial
    little leftist self) but IMO, you and others would be far happier at
    fredmiranda.com or one of the dedicated Canon sites.
    -Rich
     
    Rich, Dec 21, 2005
    #9
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