My 300D wont lock on a point in its AF setting

posted by skeetdawg on Jul 24, 2007

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Hi, i have the Canon 300D and when i set it to the AF mode and point the camera on a subject for it to focus on, it wont.

the lens still turns just like its trying to find something to focus on however it just goes through the whole focus limits and wont ever be in focus, does anyone know why?

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posted on Jul 29, 2007

pbinder

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Rating: 90%, 3 votes

If you are unable to focus in broad daylight and it just hunts through the whole focus range without locking, then it sounds like a problem with sub-mirror pin (also called the second mirror pin). My 300D just had this problem and I had to send to service to get fixed. I sent to http://www.keh.com/ as they were at least $50 cheaper than going straight to Canon. Just got it backed and it works like a charm again.

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Solution #2

posted on Jul 27, 2007

soxboston

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Master
Rating: 75%, 11 votes

Your AF might not be working if you are in low light conditions. A simple solution is to obviously turn some lights on, or you can turn the AF Assist lamp on, which lights the subject to ensure proper focusing. My D50 does this from time to time if conditions aren't great. Hope this helps.

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