Question about Canon 24-70mm f/2.8 Lens

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Auto focus trouble

Recently the 'auto focus' only focuses on the far left point in Manual & AV mode - but, strangely enough, works fine when in auto mode. Awhile back I got an error 05 - I think, or something like that - could it be related? What should I do to correct the problem?

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Re: auto focus trouble

Most likely, you have changed the AF point, which only takes effect in the creative modes (Manual, Av, Tv, P, etc)

There should be a button on your camera that has a grid like pattern above it, like
- - - - -

or so. press that, look through the viewfinder, and move the shutter or rear wheel, you should see the different AF points like up in red, and as you turn different ones will light up, and eventually all of them. also, you can look on the screen on top (or back, if its a rebel) and it will show you which ones are selected while in that mode, instead of looking through the viewfinder.

Posted on Dec 06, 2007

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The macro functions should work fine, though of course you'll have to focus manually.

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Hi there!

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The further you zoom, the wider the aperture opens allowing more light for the camera to focus properly. If the aperture mechanism is damaged, the auto-focus process may not work as it should; which would explain why the auto-focus feature works only when at 18mm.

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I hope this helps!

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