arkin_kora Posted January 19, 2006 Share Posted January 19, 2006 Could u suggest me if I need to protect my camera (Nikon D100) and lenses in extremely cold weather ? I will be in Moscow and then in Siberia soon and may come across weather as cold as -40 degrees Celsius (-40 F) Link to comment Share on other sites More sharing options...
fk319 Posted January 19, 2006 Share Posted January 19, 2006 My brother wrote a comment about antartica, http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00CwHA Link to comment Share on other sites More sharing options...
frank uhlig Posted January 19, 2006 Share Posted January 19, 2006 Condensation happens to cold matter brought into warmer surroundings. So, be careful bringing in the chilled camera into the heated house. keep in in its bag and wait a few hours in extreme temperature shifts. Going out into the cold weather will not be so hard. The batteries are best kept "warm". At -40 C you are approaching absolute zero in a way and electrons do not move at -273 C, except in superconductivity .... just kidding. How do you protec tyourself? can you fit your camera under your fur coat? And take it out only to shoot, then back in? Link to comment Share on other sites More sharing options...
cghubbell Posted January 19, 2006 Share Posted January 19, 2006 The absolute worst thing you could do would be to keep the camera under your coat and remove it to take photos. You want the camera to stay at outdoor temperature... It's ok to go from warm to cold, indoors to outdoors, but don't take the cold camera back indoors or it will condense and end up with frost. When you head indoors have a large ziplock freezer bag available. Squeeze as much air as practical out of the bag and leave it sealed for 1-2 hours after you go in so the camera can warm up to room temperature. Same goes for any additional glass you are bringing. remember to take the flash card out of the camera first so that you can download without waiting for the warm up (flash cards won't cendense dangerously). You may want to have a set of batteries and change them quickly... You don't care about condensation on the batteries, so keep them warm in an inside pocket and rotate them in the camera. Link to comment Share on other sites More sharing options...
ian green Posted January 19, 2006 Share Posted January 19, 2006 this is the good advice in the previous post about ziplock bag<br> works ok when returning home from -35C into +30C<br> just wait at least for one hour Link to comment Share on other sites More sharing options...
mark_chappell Posted January 19, 2006 Share Posted January 19, 2006 <I>The absolute worst thing you could do would be to keep the camera under your coat and remove it to take photos. You want the camera to stay at outdoor temperature...</i><P> No, there's little or no problem at all with taking a warm camera from under a coat and using in in a cold environment. However, you WILL get a condensation problem if you take that cold camera and put it back under your coat into the warm, humid air between coat and body. Link to comment Share on other sites More sharing options...
cghubbell Posted January 24, 2006 Share Posted January 24, 2006 Removing a warm camera from under your coat, where it's highly humid, and exposing that humidity to the cold will not be pleasant when the frost shows up. If it were not highly humid in your coat, then I'd agree it would be ok to remove the camera... Go ahead and try it, just make sure you have a spare camera to work with. Link to comment Share on other sites More sharing options...
mark_chappell Posted January 24, 2006 Share Posted January 24, 2006 <I>Removing a warm camera from under your coat, where it's highly humid, and exposing that humidity to the cold will not be pleasant when the frost shows up.</i><P> This is not an issue for frost on the camera surface, as it is the air that has humidity (contains water vapor), not the camera surface. When you take it from under your coat, the camera will be much warmer than 'outside' air and hence very resistant to frosting. You only get condensation or frost formation if you've got an object with a surface that's colder than the dew point of the air -- impossible, if the object's surface is warmer than the air temperature. If, however, you've got warm humid air trapped <B>inside</b> the camera, it could condense on interior surfaces as the camera cools down. Link to comment Share on other sites More sharing options...
steve_black2 Posted March 15, 2006 Share Posted March 15, 2006 At what temperature should you start using the ziploc bag? E.g., If I'm out shooting around 32F, is the swing to indoors (68F) going to be an issue? Link to comment Share on other sites More sharing options...
mark_chappell Posted March 15, 2006 Share Posted March 15, 2006 <I>At what temperature should you start using the ziploc bag? E.g., If I'm out shooting around 32F, is the swing to indoors (68F) going to be an issue?</i><P> Depends on how humid the indoor air is and how cold the camera gets. If indoor air is fairly humid and you thoroughly 'cold-soak' the camera, you will be bringing a camera that's well below dew point temperature into warm, humid air, and you will get condensation. Remember that condensation will often form on a glass of ice water (also about 32 F) indoors. Just like the glass holding the ice water, your camera will have a cold surface that will induce condensation.<P> If your indoor air is pretty dry (very low humidity), you may be OK with a 32F camera. If air is at 68F, relative humidity must be below 26% (about) to avoid condensation on a 32F surface. Link to comment Share on other sites More sharing options...
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