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Canon EOS 40D Digital Camera
Problem for Canon EOS 40D Digital Camera

Lost autofocus on 40D when using ST-E2 and 2 580EX




By photograp122 on Jun 23, 2009

" "
I lost auto focus on 40D when using ST-E2 and 2 580EX II. I tried multiple lenses, including EF 50mm f/1.4 and EF 70-200mm f/2.8L; the 40D would not auto focus. When I switched to a 30D body everything worked. What happened to the autofocus on the 40D and what can I do to get it back?
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Best Solution

posted on Jun 23, 2009
Very Helpful)

baileysphoto
baileysphoto

Rank: Guide 
Rating: 88%, 2 votes
Try taking the battery out and putting it back in. If that doesn't work try cleaning the len's contact sesnors with a pencil eraser.
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