DSLR's in a high humidty environment.

Discussion in 'Digital Cameras' started by Bugsy, May 8, 2004.

  1. Bugsy

    Bugsy Guest

    Has anyone had experience of taking a DSLR to such an environment?

    I ask because when I used to take my old 35mm SLR to somewhere like Florida
    I used to have trouble with the mirror misting up when changing lenses, Is
    there a poss that in a DSLR the sensor will "mist up"?

    I guess the risk is reduced somewhat if you don't change lenses :)

    Dave
     
    Bugsy, May 8, 2004
    #1
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  2. Bugsy

    ???? Guest

    took my eos 300d to tropical world (local hothouse exhibit) outside
    temp cold wet rainy 12 deg centigrade inside warm wet humid 31 deg
    cent
    lens misted up while taking shots however given 2 secs to aclimatise
    and lens cleared got some good shots after appeared fine
    might be worth taking some silica gel just in case it does fog up
    jim
     
    ????, May 8, 2004
    #2
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  3. I have had problems in butterfly farms and tropical enclosures.
    Basically you must get the entire camera up to temperature before going
    in. Even if you do not remove the lens, most zooms 'suck' air into the
    darkchamber of the camera, and moisture may condense on inner glass
    surfaces of the lens, or the cover glass of the CCD.

    Even a sealed-unit camera like the Minolta 7/A series, because it has a
    mechanically extending zoom, will draw external air into the system if
    you zoom the lens. A very few sealed cameras (such as Minolta's Xt etc
    with an internally zooming lens and no extension) are safer than others
    when moving from cold to high humidity warm conditions.

    I have found it takes 30 minutes for a camera to adjust externally
    (outer lens face) to high humidity 30+ degrees C conditions when moving
    in from 20C conditions (which will be the case when leaving air
    conditioning to go outside in Florida). The answer is to keep the camera
    bag on top of a warm surface, such as part of an aircon system or fridge
    which emits warm air, so that it's much warmer than your surroundings.
    When visiting a butterfly farm here (the only time we get these
    conditions in Scotland!) I will place the camera bag in the car footwell
    and turn the heating on, and give the camera a thorough warm-up for the
    duration of the drive.

    Then, by getting into the humid warm conditions quickly before it has
    cooled down, the risk of condensation is almost eliminated. Even so, I
    do no change lenses once in such conditions - with any camera.

    David
     
    David Kilpatrick, May 8, 2004
    #3
  4. SNIP
    Air tight, so the factory installed dust cannot escape.

    Bart
     
    Bart van der Wolf, May 8, 2004
    #4
  5. It is not hermetically sealed, and humid air can enter the chamber
    behing it. It would be a slight barrier. However, it might actually mist
    up right behind the lens. I'm going to be very careful when using the
    SD-10 in those conditions, perhaps even more so than with a regular SLR.

    David
     
    David Kilpatrick, May 8, 2004
    #5
  6. I suppose it's done so that the magic smoke can't escape from the sensor...

    -JP
     
    Jukka-Pekka Suominen, May 8, 2004
    #6
  7. Bugsy

    Mark M Guest

    sensor...

    It's actually referred to as "pixel dust."
    -Similar to "pixie dust," but only for photographic uses in otherwise crappy
    cameras.
     
    Mark M, May 9, 2004
    #7
  8. Funny, how the sigma website fails to mention this (environmentally
    sealed). The only thing they mention is a dust protector. You'd think
    that if they had an environmentally sealed camera/senso, it would be
    mentioned on the website, no?

    -JP
     
    Jukka-Pekka Suominen, May 9, 2004
    #8
  9. Bugsy

    Mark M Guest

    You argued that it would protect the Stigma from moisture.

    It will not.
     
    Mark M, May 9, 2004
    #9
  10. Yet you said that it was. Make up your mind, will you?

    -JP
     
    Jukka-Pekka Suominen, May 9, 2004
    #10
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