Question about Canon Rebel XT / EOS 350D Digital Camera

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Autofocus jumps around and often will not settle on the correct setting

My XT can't seem to find the correct autofocus point anymore. When I hold the shutter release down halfway, the camera tries to focus, but jumps in and out of focus over and over, until I get the flashing green circle in the lower right corner of the viewfinder (the camera can't figure out the correct focus point), or it decides it has focused correctly, but it's wrong. I can see various different AF point lights flashing in the viewfinder when it does find a focus point. Can anyone help with this?

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  • Quasam Mar 01, 2008

    I have the exact same problem.

  • lusmu Mar 02, 2008

    When my camera is set on auto focus, it will jump around like his and try to focus and then i get the blinking green light and it will not take a picture. Does not matter what lens i have on it. It will still take pictures on manual settings, but will do nothing when on auto.

  • crumbb Apr 21, 2008

    I'm using the Cannon lens that came with the camera body. Doing a hard spin of the zoom wheel seems to make it work for a random period of time.

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I found what my problem was. Someone had been tinkering iside the camera, and a ribbon cable was not seated correctly.

Posted on Apr 21, 2008

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Some generic lenses have this issue (always hunting/seeking). If you're not using a Canon lens, try using a Canon lens and see if the problem persists.

Posted on Apr 21, 2008

  • John Ayres Apr 22, 2008

    The "kit" Canon 18-55mm lens that usually comes with the Digital Rebel isn't one of Canon's best lenses. You may have a defective lens. .....John

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What i do is usually put it onto manual focus then back to auto focus, what it may be is that you are using the wrong lens for your subject :/

Posted on Mar 22, 2008

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1 Answer

How do i get the autofocus points to display in the viewfinder when I press the sutter button half way? it beeps and blinks as the autofocus points display changes.


This sounds like, either you do not know how to use the camera, or the settings are set wrong.
As I have advised in many of my posts, set all menus to default or as much as you think the factory settings are. Then set them to what you like.
Also read your user manual. If you do not have one, download a copy from the Internet to your hard drive. View it with a pdf viewer, as most come that way.
Menu settings can affect many other settings, that is why reading and referring to the manual is a good idea.

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I have the Nikon 18-200 lense and it will not autofocus on my D80. I tried other lenses on the camera and they auto focused, so I presumed it was the camera. I sent it for repair, received it after being...


Try you 18-200 lens on another Nikon DSLR. If it still does not Autofocus. It is the lens. Sometimes the electrical contact points of the lens are not making correct contact with the camera. ok?

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Hello,
It's possible that the reason the "pictures turn out fairly good" is that your f-stop is set high enough that even though the image isn't properly focused, you have enough depth-of-field to bring your subject into "near focus". Does your lens try to focus back and forth when you half-press the shutter? If not, double check that the lens is in autofocus and not manual focus. You can also try cleaning the contacts between the lens and camera. Take the lens off, and then one-at-a-time clean the contacts on both the lens and the camera, using a clean pencil eraser. Gently rub the contacts. Be sure to hold the item upside down so that the eraser debris falls on to the table, not into the camera body or lens!

If none of this helps the autofocus may have become damaged and you need to have the lens and camera looked at by Canon Repair.

Jan 10, 2009 | Canon Digital Rebel XT / EOS 350D Digital...

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Are both the lens and camera set to autofocus?

Jan 25, 2008 | Canon Rebel XT / EOS 350D Digital Camera

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My Canon digital rebel will not autofocus correctly. My camera has 7 points autofocus, but it will only autofocus on the far right point. All other points are not used. I have had the camera for 14 months...


I had this problem awhile ago - you must have accidently adjusted the focal area - it is sooooo easy to do without realising it. Here is what I was told:
**************************

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
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- - - - -
-

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.

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1 Answer

RC-1 wireless remote


The RC-1 should be compatible with the Rebel XT. It can be set to a 2-second delay or no delay; pressing the button will activate metering, autofocus, and the shutter all at once.

Jul 18, 2007 | Canon Digital Rebel XT / EOS 350D Digital...

1 Answer

Won't autofocus


First try another lens on the body and see if the problem is the lens or the body,if its the body the autofocus mirror could be out of adjustment, if its the lens, it sounds like the lens took an impact and needs a pro repair. you should be able to set body to manual focus and focus lens to infinty.

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1 Answer

Only one auto focus point


have you already pushed the focus point button - top right, under your thumb and then push the set button? Pushing the set button will flip between only the centre focus point and all 7.

May 06, 2007 | Canon Rebel XT / EOS 350D Digital Camera

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