Question about Canon EOS 450D Digital Camera with 18-55 Lens

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The autofocus don't work anymore with 18-55 IS lens and EOS 450 D. The focus rings do not move at all when I half press the shot button. Manual focus works fine. The camera has about 8000 shots.

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Clean the contacts on the camera body and lens where they meet with a cotton swab lightly dampened with rubbing alcohol.

Posted on Sep 27, 2010

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1 Answer

Hello - I am having an autofocus error issue.


Check the camera and make sure that autofocus is on on both the lens and the camera, if they both have switches.
Check the autofocus mode, whether it's single, or continuous. If it's in single, it'll only focus once per time you half-press the shutter release, continuous it'll continue to focus as long as your finger is down.
If that doesn't work, try another lens and see if the problem still persists. Otherwise, contact the manufacturer, as it could be hardware related.
Remember, cameras do not autofocus well in low light.

Mar 01, 2011 | Canon EOS 450D Digital Camera

Tip

Manual Aperture Video For Canon Eos Rebel 500D T1i


Unfortunately the Canon T1i shoots video in full automatic mode. This means that if you want to change the depth of field...well, you can't. There are many angry T1i owners trying to get Canon to release a firmware update to have it perform like the T2i, but so far that has been fruitless.

So what can a budding videographer do get some artsy-looking footage with his or her T1i? The Band-Aid solution involves fooling the camera into thinking there is a manual lens attached so that the camera will relinquish control. To do this, the communication between the camera and lens has to be severed (don't worry - it doesn't involve modifying anything).

Step 1.
Put the camera into Av or Manual mode.

Step 2.
Select the desired aperture (if the aperture is "wide open" - e.g. F1.8 on the 50mm F1.8 II lens, then skip Step 3).

Step 3.
Press the depth of field preview button on the side of the camera (above the T1i or 500D logo on the curved part of the camera body).

Step 4.
With the DOF preview button still depressed, push the button as if to remove the lens, and turn it very slightly until "F00" shows up on the back display. You may now release the buttons.

Step 5.
Switch the camera to video mode. There will be a warning message, but just do as it says and shoot anyway.

You're now ready shoot some nice shallow DOF shots. Use the manual focus ring on your lens to shift the shallow depth of field around in your shot. Please note that since the camera is no longer communicating with the lens, autofocus will not be available to you. Put the lens in manual mode on the barrel to be safe - many lenses do NOT have manual override and forcing the focus ring while in AF mode can damage the lens.
Good luck and happy film-making!

on Jul 24, 2010 | Canon EOS 500D / Digital Rebel T1i Digital...

1 Answer

Is it possible to manually control the focus on this camera? (Konica Minolta Maxxum 400si SLR 35mm Film Camera) I need to be able to manually control the focus, apeture, and shutter speed for a film...


The description of the manual focus is available in part 2 of the manual, page 40. The manual is available as a PDF here: http://ca.konicaminolta.com/support/manuals/film-cameras/film_af_slr/index.html#si_series . It is the seventh camera in the SI series in the list.

To manually focus the lens, press the focus-mode button on the front of the camera (bottom left when you are behind the camera) until M. focus appears in the data panel. If you have an AF lens, turn the focusing ring until the subject appears sharp. If you have an xi-Series or AF Power Zoom lens, pull and turn the lens control ring.

The focus indicator will light when the subject is in focus. To return to autofocus mode, press the focus-mode button again. The camera will also return to the autofocus mode if you press the program reset button.

I hope this helps.

Cindy Wells
(in manual focus, you can take a picture even if the subject in the focus frame is not in focus. Often it means you need to take multiple pictures to get a good shot of the subject. The advantage is that you can get some interesting shots.)

Feb 07, 2011 | Minolta Maxxum 400si 35mm SLR Camera

1 Answer

I am using Canon 1000D dslr for more than 18months, it was working fine until last Sunday. I went outside and started taking few shots... it was not focusing properly (or should I say not at all!) and...


The autofocus motor could be be broken, or the lens may not be communicating correctly with the camera. One thing that can help if it's not communicating correctly is to clean the lens contacts. If you take the lens off, you should see some gold plating on the plastic on the side of the lens that attaches to the camera. You can clean it by lighting rubbing it with a new, CLEAN pencil eraser. if that doesn't work, you may need a new lens unfortunately. best of luck!

Oct 05, 2010 | Canon EOS Digital Rebel XS / 1000D IS...

1 Answer

I have a nikon d-40 is there a seeting on it that well let the cameras lens focus when you push the button half way down. I took picture but I had to manual focus I don't know if it the lens or this camera...


Any of the autofocus settings will attempt to focus when the shutter is pressed halfway. What lens are you using? If it doesn't have an internal focus meter, then the D40 won't autofocus with it no matter what. If it does have an internal motor, then check to make sure the lens is set on autofocus.

Check Custom Setting 12. If it's set on AF-On then the shutter button won't focus.

If this doesn't fix it, specify the lens and any other details.

Oct 09, 2009 | Nikon D40x Digital Camera

1 Answer

Auto focus problem


If you set the camera on "manual", it assumes you focused manually and allows you to press the shutter without having to stop half-way. Check your settings.

Oct 07, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

I can not get my canon eos rebel k2 focus on a


Autofocus is activated by pressing the shutter button halfway, be shure to have a EF lens in the camera, otherwise it won't make autofocus, put camera on full auto mode or "sports mode" (the running guy) and the focus settings on redictive AI Servo AF: Continuously tracks subject movement and achieves focus before the exposure starts.

Jul 10, 2009 | Canon Photography

1 Answer

Canon Rbl XT out of focus in viewfndr when shutter half way down


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...

5 Answers

Nikon d40 autofocus


Look on the left side of the lens. Make sure the button is on A for auto focus and not M for manual. OR not stuck in the middle. Hopefully that will solve the problem.

Jul 11, 2008 | Nikon D40x Digital Camera

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