Question about Canon EOS 400D / Rebel XTi Digital Camera

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Focusing problem I have a canon Rebel XTi and in all the autofocus settings the camera won't take a picture, it seems to not be able to focus. When i set the camera into manual focus the focusing ring doesn't move, or seems to be locked. How do i fix this?

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  • bdavids Jul 30, 2008

    I have the same problem. My camera comes on but when i try to focus and shoot nothing happens and never focuses.

  • hayden1210 Aug 31, 2008

    My Rebel XTi will not autofocus with my 75-300 mm lens. It clicks and makes noise but will not autofocus. It will work on Manual focus. It will work in autofocus with my basic kit lens. Is this a lens issue or a camera issue?

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Hi everyone.

I had the same problem with my 400D. It refused to focus. On manual focus I could take pictures though, but not on Auto focus.
What happened was I cleaned the mirror with a piece of soft cloth, the spring hooked onto the cloth and came loose.

I took my lens off, checked the mirror, found that the little spring connecting the mirror and the little glass part above the mirror was loose. Took a lot of patience and hours to get it back in. I used a pair of tweezers 2 x toothpicks and a short piece of fishing line (thin line). Go have a look at another 400D how the spring should be clipped in. I used the fishing line to hook the " L " shape of the spring back in after I lined the back part of spring up, since there is no space next to the mirror and the body of the camera.

Like I said. This takes a lot of patience and be prepared to sit for 3 to 4 hours.

It worked though.

Hope this helps.

Where can I get a service manual for the 400D ?


Posted on May 24, 2009

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It sounds like you might be too close to whatever it is you're trying to take a picture of. Each camera lens has a minimum focus distance listed on it that determines how close you can get to something and still take a picture. Page 45 of the XTi manual talks about minimum focusing distance and describes the camera's behavior.
It's also possible that there is not enough light for the lens to focus. In this situation you might have to flip the switch on the lens to manual focus to take your picture.
So, either try moving further away so the lens can focus or use the manual focus.
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I'm sure you have long since returned from vacation!

Hope this helps!

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