Question about Cannon EOS 50D Digital Camera

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The lens is a month old. I switched from auto focus to maunal focus for the first time. When I switched back, augtofocus no longger works. I sounds like it is trying but the ring doesn't move. Is it under warranty? Does it need to be sent away or are there local repair locations/

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Remove the lens. Move all the parts. Clean the contacts where the camera body and lens meet with a cotton swab lightly dampened with rubbing alcohol. Re-attach and try it.

Posted on Aug 24, 2010

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My canon 18-55 lens will only take a picture in wide angle. as soon as i try to zoom at all it won't take a picture. it is 4 months old and hasn't been used much. and i haven't dropped it. any suggestions?


The Auto-Focus on the lens is damaged. I have had the exact same problem with my 18-55 and I ended up buying a new one because I take shots at weddings and I can't afford to manually focus each photo. You can still use it if you switch the small knob to MF and then use the focus ring for manual focus.

Jan 18, 2011 | Canon EF-S 18-55mm f/3.5-5.6 USN Lens

1 Answer

Auto Focus not working for Canon EFS 18-55mm lens


This usually happens when the contacts between the lens and the camera are dirty. Try taking the lens off and cleaning carefully the metal contacts on the camera and the lens. If that does not solve the problem, you can get a warranty repair or replacement since that camera should still be under the original 12 month warranty.

Jul 20, 2010 | Canon EF-S 18-55mm f/3.5-5.6 USN Lens

1 Answer

Shutter frame rate drops to about 1 per sec on CH with MB D10 while using any auto focus lens. 14-24,24-70 or 70-200 and an older 20mm auto focus. With no lens or a manual focus, very old 55mm Micro, lens...


Wow, that's weird. Does it do it with the auto-focus switch on the body turned to manual? I shoot a D300 and know pretty much everything about it there is to know and the D700 is basically the same camera with a full frame sensor. The only things I know of that drop CH frame rate are shooting in 16-bit raw and it shouldn't kill it like that, using full-auto with tracking will also cause a lag in auto-focus but that still doesn't seem right here. If it only does it with the auto focus on then it may have trash on the AF screen in the camera and needs to be cleaned. Try setting the body switch to manual focus, remove the grip and shoot jpeg and see if it still happens. If it does, reset the menu settings and try again. If it still does it than you probably need to give it a trip to Nikon. If it quits than start putting things back one at a time until you figure out what is doing it.
Somebody told me that Nikon will clean the pro cameras for free once a year while under warranty, I haven't looked into it yet to make sure.

Nov 01, 2009 | Nikon D700 Digital Camera

2 Answers

Have a two month old 18-270 Tamron lens. Used it a


If it's only two months old then it's still under the manufacturer's warranty so send it back to Tamron. I can't tell you where to send it as you haven't said which country you're in. Tamron value their reputation and usually provide excellent after-sales care.

If you're in the UK you additionally have Sale of Goods Act protection for up to six years in England and Wales and five years in Scotland. Either way, the Act allows you to demand a full refund or replacement from the retailer; I'd suggest a refund as bad lenses often come in batches and a different supplier is less likely to have one from the same production batch.

Note that any attempt to fix the lens other than by normal use of the lens and camera controls may completely remove your warranty benefits or consumer protection.

Oct 26, 2009 | Cameras

18 Answers

Auto Focus not working for Canon EFS 18-55mm lens


Pulling gently on the focus ring worked for us. Exactly what the Dr. ordered. Slight pop, maybe 1/16" movement, and the lens is working again!

Jun 29, 2008 | Canon EF-S 18-55mm f/3.5-5.6 USN Lens

1 Answer

Not auto focusing


It could be that the autofocus switch has become unglued from the frame and so it doesn't ever switch on. If your camera doesn't indicate that autofocus is on, but you're not getting an error message, then this might be the problem. Unscrew the two screws that hold the AF switch onto the lens, and see if the underlying PCB upon which the switch is mounted has come loose. If you, take the lens apart from the back and use double-sided tape to re-adhere.

Jun 07, 2008 | Sigma 18-200mm f/3.5-6.3 for Nikon

1 Answer

Not working with Sony Alpha 100


well after a week in the shop it came back working. the guy at the shop could only tell me that the repair people had fixed a problem in the auto focus (he had no other information). So the solution here is going to a place to repair your lens. if someone finds the cause of this problem it would be great

Feb 25, 2008 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

Sad photographer


Sounds like you need to get your camera fixed by Nikon.

However, you say the auto focus stopped working, you didn't switch to a lens that uses a mechanical focus linkage do you? The D40 only supports lenses with AF-S or AF-I type autofocus drives. AF-D and AF-G types without AF-S or AF-I don't autofocus.

Also, check that the A/M switch on the lens is in the correct position.

Manual focusing is quite difficult to do accurately with an AF camera. The screen inside the camera is not optimized for this. If you are sure you are focusing accurately but the pictures you take are still out of focus, the mirror may need adjusting. I can provide further info on this if you require, but if you're within warranty, i'd recommend that route first.

Nov 19, 2007 | Nikon D40x Digital Camera

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