Question about Camera Lenses

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Canon 100-400 IS lens

I have a 4 months old canon lens as above. I have spots on the inside of both ends of the lens. No doubt caused by Induan humidity.

What's the solution?

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Early Solution is: Contact this man
Sanjay Sharma SHYAMJI CAMERA REPAIRS 17, Dev Amba Market, Station Road Ajmer- 305001 (Rajasthan) Ph 0145-2427618 9928035836 He's great. Very skilful, and helpful and good on spares.

Posted on Feb 20, 2008

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1 Answer

Canon 17-85 IS zoom ring locked at 17mm.


Sometimes, if that lens has heavy use or if it has been traveled with a lot, several of the internal zoom screws may come loose deep inside the lens and cause the zoom to freeze. It requires a complete disassembly of the lens to reach the screws and re-seal them so it does not happen again.
Bob Kilbourn www.camerarepairs.com

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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

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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

2 Answers

Canon 17-85 is usm lens very loose focus ring causing lens creep


I also have a 40D with exactly the same lens and fault. Over the course of a few months the lens became "sloppy" so if the lens was pointing towards the ground it began to creep. Towards the end it dropped to its full extent. About 10 days ago it locked up completely and I was unable to zoom at all. Returned to Canon as mine was just in warranty and they have fixed and returned it within 7 days. Very effecient even sending me a text message to say that it had been dispatched. The lens is now just like new and I only hope that this is not an annual trip.
Bottom line; I am an engineer by profession and I wouldn't touch it with a barge pole. To do these properly you need special tools and jigs to make sure things line up properly. It also needs to be done in a "CLEAN" environment.Do yourself a favour and leave it alone.

Apr 15, 2010 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

1 Answer

Acquired Promaster 60-300mm FD lens for Canon but am unable to remove the cover on the mount end of the lens? Do I need to align somehow to release/remove cover? Thank you for your assistance. SandyBucket


usually there is a little pin on the inside that the cover presses down, maybe the lens cover was put on wrong, so if you push it down it would be able to turn. or there is a little button next to it.

Jun 09, 2009 | Promaster 60-300mm f/4-5.6 for Canon FD

1 Answer

Autofocus function will not work on Canon 17 40mm 1.4 EF lens


Since the problem is limited to this lens, I highly doubt that you would have to replace the cameras AF sensors.
Since you only have the problem with this lens, I am afraid that you will have to get the lens repaired. Is the lens also 3 years old? Did you get it with MACK extended warranty?
Sometimes, Canon do these kinds of repairs for free, if they discover that there was some manufacturing error that caused it to fail. So be sure that you get it to a certified canon workshop. 
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1 Answer

Canon EF-S 17-85MM F/4-5.6 IS USM prevents features from working on 40D


something sounds strange about this. aperture 00 is an invalid aperture value. stands to reason if that is the case the camera would complain about it. via error code. being that its only six mos. old i would give canon a ring.

Oct 11, 2008 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

2 Answers

Lens won't allow me to change aperture & several other functions on camera


The USM engine may be out of order, or there is a bad contact in the lens.

Oct 11, 2008 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

2 Answers

Canon 20d error 99


does the camera work OK with other lens? If yes then Lens is the patient - only 4 moths old -send it back

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