7D focus in the cold weather

Started Jan 21, 2013 | Discussions thread
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7D focus in the cold weather
Jan 21, 2013

was out this morning -30 windchill shooting from the car with my  7D and 500 f4

camera was in the car with me nice and warm and the lens was on a window mount sticking out in the cold I noticed that when i focused on something it would go in and out just a hair

just enough not to get a sharp focus is this because the camera in warm and the lens is in the could weather it is fine if i shoot outdoors and not in the car in the cold weather how you work around this ? not shoot in the car i suppose in cold weather

thanks for any help

 GARRICK's gear list:GARRICK's gear list
Canon EOS 5D Mark III Canon EF 500mm f/4.0L IS USM Canon EF 17-40mm f/4.0L USM Canon EF 100-400mm f/4.5-5.6L IS USM Canon Extender EF 1.4x III +3 more
Canon EOS 7D
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