Leaving your camera in your car with below 0 temps.

I've never tried leaving my 350D in the car overnight but when I only had my S20, it would pretty much live in the car thru the seasons and I never had any problems with it. Still works to this day if I get new batteries for it.

My SLR on the other hand, I wouldn't dare leave in my car but more for the reason of having it stolen. I forget what the operating temps are for the 350D but I'm sure it'll be able to handle what Portland has to throw at it

Photolistic wrote in post #2298021
Is it ok to leave your camera in your car?

Tapeman wrote in post #2300531
I leave my gear in my van overnight often

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I snowmobile with mine alot in - 20 degree temps and have never had a problem here is an example of whare I use my camera after I took this lots of pic's I put my camera back in my lowepro AW 200 bag with the weather shield and drove in these consitiond for about an hour home and I had no issues. Don'r worry about it just don't get it wet.

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PAS Photography wrote in post #2299320
Correct, there shouldnt be water in your camerato start, But with the camera being cold the moisture in the air condenses on it (like a glass of ice cold lemonade outside in the summer). The condensation doesnt just happen on the outside, but inside as well which is where the damage may occur.

I meant to refer to water in any of the camera's components that would freeze and destroy something - this is why most plants can't take frost - the cell water expands and damages the cells.

Condensation is obviously an issue, that's why I agreed with the plastic bag thing.

However, I don't think bringing a cold camera into a warm place is all that dangerous; providing that:

1) the lens isn't racked in and out (zoom lenses are air pumps),

2) the lens and lens cap are not taken off,

3) the doors to the terminals, battery and CF card are not opened.

Moisture will only significantly condense on the outer surfaces of the camera - much like a light drizzle on the camera from precipitation. This can be wiped off.

There is no way moist air can get inside the camera if the precautions noted above are taken (until the entire cam warms up).

The air that is already inside the cam is not moist because it's cold and cold air holds very little water. If it was moist, then there would be condensation inside the camera already. Photogs that work in the tropics have a devil of a time with moisture - the RH is in the 90's.