Question about Canon EOS 30D Body Only Digital Camera

1 Answer

Canon AF Issues


I am using a 30D with a 17-85 lense, recently when I attempt to take a long range shot the camera/lense will not lock in and focus. The lense will move back in forth and unable to lock on a focal point. I have tested and it is only happening on long shots, if I zoom in on say an item 25-50 feet away it is fine but when I go outside that range it cannot get focused.

Thanks in advance for your assitance.


Posted by on

  • 1 more comment 
  • Ldarter Dec 30, 2008

    I'm having the same problem. And the 30D back focuses in AF. Fully frustrating!

  • Anonymous Feb 13, 2009

    My Canon EOS 30D has the same issue - often 'searches' for correct focus, especially in low-light/high ISO situations. About 50% of my photos are out of focus just enough to be really frustrating when shot in AF mode.

  • chelleholder Apr 28, 2009

    No matter what lens I attach, my canon 30D auto focus is unreliable. We sent it to be "cleaned", and it worked for a few weeks without a problem, but now it is back to the same old tricks. It's extremely annoying, particularly when you need to focus on something quickly or in low light.
    Any other suggestions?



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Change from auto focus to manual focus or focus using only one focal square and change the setting to One Shot. You may need to shoot in Manual (M) mode though. Any of the "auto" modes will not let you.

Posted on Apr 07, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

After 6 years my Canbonb 30D is presenting some shots as blank images.

I am sorry to say that it is not getting any younger but neither am I. Take it to the shop and let them have a quick look at it, may not be all bad news.

Jan 26, 2013 | Canon EOS 30D Digital Camera with 18-55mm...

1 Answer

I have a canon 40D and it will not shoot in auto focus .. was working fine today and just stopped. will not do anything set on AF but in manuel it will ,,, Help !

A couple of possible reasons:
You are trying to take the shot with the lens too close to the subject. If you attempt to take a shot with AF on while too close then the camera won't take the photo. Try backing up from the subject a bit.
Which camera mode are you in? If you are using the green box (automatic) mode then in very low-light settings the camera may refuse to take the photo.
The AF on your lens might be broken. Try using a different lens (if you have one available). Do other lenses have the same problem?

Mar 13, 2011 | Canon Cameras

1 Answer

Canon EOS 30D users manual


Great camera... Get the Manual HERE!


Sep 01, 2010 | Canon EOS 30D 8.2MP Digital SLR Camera...

1 Answer

AF beep does not work even the beep function is on. Pls help.

be sure that your AF is not in 'servo' mode. It only beeps when locked on in single shot mode

Aug 30, 2010 | Canon EOS 30D Body Only Digital Camera

1 Answer

The AF confirm beep does not work even I have turned the beep to "on" in the menu. Pls help.

be sure you are not in servo focus--the lock on beep only works in single shot mode

Aug 30, 2010 | Canon EOS 30D Body Only Digital Camera

1 Answer

Hi, is the Sigma 28-300mm f/3.5-6.3 DG Macro fully compatible with the Canon 30D ?

Yes, it is fully compatible with Canon 30D or any other EF/EF-S Canon body.

Jul 01, 2010 | Sigma 28-300mm f/3.5-6.3 DG Macro for...

2 Answers

When i turn on my camera it makes an clicking

it is supposed to do that, do not worry it is fine

Feb 20, 2010 | Canon EOS 30D Body Only Digital Camera

1 Answer

30D locks up and won't take pictures.

are you taking photos of still or moving subjects? One shot is suitable for still subjects, someone sitting down or still life shots. The camera will balk at you if you are constantly panning or have moving items in the fiewfinder field of the focus points and it is set in one-shot mode.
try changing to AI Servo and see if the problem continues.

Nov 30, 2009 | Canon EOS 30D Body Only Digital Camera

2 Answers

500mm lens will not function with my Canon digital Rebel XT.

This lens will work with Canon cameras. I use one on my Canon 30D. It is a fixed F8 you can not use auto or green box because there are not any contacts on the lens to talk to the camera. Its back to the basics manual adjust shutter and ISO to the get a correct exposer. DEFINITLY NOT A POINT AND SHOOT LENS.

Dec 11, 2008 | Quantaray 500mm f/8.0 Mirror with Macro...

Not finding what you are looking for?
Canon EOS 30D Body Only Digital Camera Logo

Related Topics:

220 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Cameras Experts


Level 2 Expert

176 Answers

old marine
old marine

Level 3 Expert

2098 Answers


Level 2 Expert

254 Answers

Are you a Canon Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides