cold outdoors to indoors

Discussion in 'UK Photography' started by jim west, Dec 5, 2012.

  1. jim west

    jim west Guest

    Could anyone explain to a novice what precautions are worth taking to
    prevent any problems moving from cold outdoors to warm indoors (or the other
    way around). Thanks.
    jim west, Dec 5, 2012
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  2. jim west

    Rob Morley Guest

    Indoors to out you stand the risk of drawing moist air into the lens
    when the warm air contracts (this is going to happen anyway with a
    zoom), outdoors to in you'll get condensation on the cold bits. Cold
    also affects film speed and battery state. There's not much you can do
    about it if you want to use the camera, but otherwise keep it in a
    closed insulated bag with a couple of silica gel packs. Some people
    keep the camera inside their coat to stop it from chilling, or keep
    the battery in an inside pocket when not in use (but opening the camera
    to fit/remove the battery also potentially lets in damp air).
    Rob Morley, Dec 5, 2012
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  3. Not usually a problem with warm in to cold out, unless warm in is *very*
    humid. In which case stabilise in dry warm before going out.

    Going out into cold, try to keep equipment as warm as possible (helps
    batteries too.

    *IF* cold out is dry freezing - then all you need to do is to have
    polythene bags with seal for the equipment to go in - in the cold - when
    bringing them indoors. This prevents warm (damp) air from getting inside
    and condensing in the lens, electronics, sensor, etc.

    Some recommend silica gel bags, but they are only helpful if the outside
    is cold & damp AND the gel has been recently dried and kept in sealed
    containers. Otherwise the gel does nothing!

    For outside cold wet, all I can say is, before going indoors:
    a) dry off all liquid on surface areas.
    b) move to cold dry area before going into warm. If you do have
    freshened silica gel use it here in bags as above. Remove batteries.
    Leave equipment to stabilise in cold dry surroundings; then..
    c) repeat advice above.

    If outside in wet high humidity (eg mist fog), try to avoid using
    extended zooms which pump air in-out while zooming. If you have to, then
    pump air in-out by zooming lenses (off camera) in cold dry surroundings.


    Michael J Davis, Dec 5, 2012
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