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My 7D is about two years old, 15,000 exposures so far.
I've recently encountered a frustrating problem. I try to never shoot above ISO 800, usually at 200 or 400. When I go out with the camera it will sometimes, without my having touched anything, change the aperture to something other than the 5.6 I prefer, or it will change the ISO to something ridiculous like 6400. Yesterday I got caught this way when I noticed after taking about 50 shots that the thing had gone to ISO 6400 and F7.2. My last photo session was at ISO 200 and F5.6, and I didn't touch the camera after that session or before yesterday's session.
Has anyone else experienced these gremlins?
Thanks for any help or advice,