Question about Canon EF-S 18-55mm f/3.5-5.6 USN Lens
i have a pair of EF-S 18-55 usm lenses, one is badly worn and wont focus well (focus barrel is loose), the other has a scratched lens (filter end)
There are two holes that would suggest the ring unscrews, I have machined a tool to fit but it wont budge. I don't want to put too much force on it with it being plastic. Can the ring be removed or do I have to dismantle the lens from the other end?
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Posted on Jan 02, 2017
Here is a link to many Canon products in PDF form: Canon Parts Lists
Unfortunately, the only 300mm 2.8 lens listed is the IS version
The procedure is not that complicated, but you need to pay attention to the connections on the circuit board. The mount is removed, and you need to remove the small screws that hold the connector board to the mount ring first.
I cannot do live chat due to I use a Mac, but I will monitor the thread if you have questions,
Posted on Mar 24, 2008
There is no battery in the lens. The lens receives power from the camera. Whether or not the lens is getting power, though, you should be able to focus manually.
When you say you can't focus manually, do you mean that you can't turn the focusing ring on the lens, or that when you turn the ring the image does not come into focus?
If you decide the lens needs to be repaired, I recommend sending it to Canon. You can go to their website (canonusa.com if you're in the US), click on support, and follow the links.
Posted on Dec 26, 2008
SOURCE: EF 24-70 lens droop...
The zoom creep is an easy fix for Canon. I really do not recommend trying to tighten it yourself, since that would void your warranty.
It is usually free to tighten the zoom ring.
Posted on Jan 19, 2009
If your AF motor is hunting then the lens probably needs to be looked at. I wouldn't recommend this as something to do at home so you will need to either find a repair shop if it is out of warranty or return it to Canon if it is in warranty.
Posted on Jan 17, 2010
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