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Archive 2013 · Canon 7D problem
  
 
hermv2000
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p.1 #1 · Canon 7D problem


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,

Herman



Mar 15, 2013 at 06:48 PM
Paulthelefty
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p.1 #2 · Canon 7D problem


My first thought would be to check your battery connections and lens to body connections. Perhaps change your clock/memory battery if it is more than a couple years old, or a least check the connection there as well.

I have had my 7D for nearly a year, and probably 30k actuations, and never had anything like that happen.

Paul



Mar 16, 2013 at 05:51 PM
jefferies1
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p.1 #3 · Canon 7D problem


In don't have a 7D but check to see if you have pre-set modes. You may be hitting a button that is linked to the pre-set. Could have set-up without knowing as you made other adjustments.
I did this one time and took forever to figure out what was going on.



Mar 18, 2013 at 08:30 PM
 

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hermv2000
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p.1 #4 · Canon 7D problem


Thanks for the replies, I changed the clock battery and left it powered off with neither battery in for over an hour. Hopefully that will fix it, I haven't had a chance to use it since.

Herman



Mar 18, 2013 at 09:31 PM
ventieldopje
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p.1 #5 · Canon 7D problem


Maybe the camera's mode dial was switched to a user preset (C1 etc.) like Jefferies1 said. Some people reported that the mode dial often switches when they don't want it to like when bumping in to someone, I don't know ... never happened to me. All I know is that lots of people complained and wanted to have a second 'safety switch' button, or like the 1D's have the buttons.

That's all I can think of that might suddenly change your settings without noticing it, find it hard to believe it might be due to a faulty battery or something.

For the aperture problem, try setting it to locked when shooting



Mar 19, 2013 at 12:16 AM
Brit-007
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p.1 #6 · Canon 7D problem


I do have a 7D and there is a Menu item under the default setting (see page 47 of the owners manual) where the ISO speed is set to Auto. I would check through these first. Auto ISO can be in P/TV/AV/M modes. Check on the top display to see if there in an "A" displayed for ISO.

For the ISO setting check on page 65.



Mar 19, 2013 at 07:59 PM





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