40D > killing the AF in your lenses?

[tom_koetting]

I have two 40D's. Saturday while shooting a wedding, the AF went dead in my 10-22. Tried rebooting, switching bodies (even to a 30D) and

cleaning contacts. Nice dice.

 

An hour later, the AF on my 60 Macro went dead. Really? MF with focus confirmation works on both lenses but AF is dead ... no AF mode

registers on the body.

 

Finished the job, but wondering if there's a voltage issue with the 40D and all of my lenses are like lambs to the slaughter.

 

Anyone else?

 

<a href="http://www.flickr.com/photos/tomkphoto/2624856548/" title="0806sjg-713 by t o m K p h o t o, on Flickr"><img

src="http://farm4.static.flickr.com/3248/2624856548_b46e054502.jpg" width="500" height="293" alt="0806sjg-713" /></a>

[zml]

Well, have the camera(s) and lens(es) checked by Canon before going for another kill, but (FWIW) I have neither heard about it nor had it happen with a multitude of lenses (no EF-S though) in well over 20K frames shot.

[tom_koetting]

20k frames on a 40D?

[apetty]

20k frames on a 40D?

 

Not really a stretch. I've had mine about 2 months and almost have 4k shots, so if someone had it for a while 20k is nothing. I think it has a rated life of 100,000.

[jo7hs2]

Do the lenses still work on your other 40D?

[jo7hs2]

Nevermind... I missed that.

[sean_r2]

Have never heard of this happening. Try contacting Canon for repair options.

[chris_adams11]

That does sounds strange. I've never heard of anything like this from any photographer. Send it to Canon

[PuppyDigs]

My 40D works fine. No AF failures since I bought it 9/2007. Sounds like the OP has a broken one and a rare problem I

have not heard of on these or other forums.

[zml]

<i>20K</i><br>Oh well, let's just say that I use my cameras :-) Since 9/7/08 - 23900 shots (3900 after the second roll-over of the counter) And assuming $8/roll - and tha't a very conservative assumption - that would be 663 36 exposure rolls for the total cost of 5300 big ones. Hey - digital is cheap!

[tom_koetting]

Canon techs think two lenses failed, within an hour of each other, by fate. They do not think it's an issue with the bodies

(the problem follows two 40Ds and a 30D).

 

Both going back to Irvine - third time for this 10-22

[jo7hs2]

I'm just curious, and I'm guessing you probably did, but did you check out the contacts on the lens? I wonder if it is possible something might have contaminated or damaged the contacts on the lenses... If the aperture was operating correctly then that would seem an unlikely cause, but hey, you never know.

[christopher hartt dallas]

Do you store the lenses near a large EMF emitter (large bass speakers, AV Center, or electrical transformer)?

[tom_koetting]

Joshua - cleaning contacts was one of the first tries. I've heard of D3's coming to their knees over dirty contacts.

 

Christopher - good one - don't think so ... if so, it would've been other lenses in my fanny pack

[tom_koetting]

FOLLOW UP - Canon fixed both lenses for $100 - they will arrive back within 10 days after leaving my office - have shot a

couple of short jobs with the other lenses in my bag with no issues.