Question about Canon Normal EF 50mm f/1.4 USM Autofocus Lens

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Canon 50mm f1.8 got wet won't work

It wasn't submersed but it won't focus or let my camera take a picture. Is there a chance I can dry it out. Is their electronics in the lens itself or just in the camera? The camera works with other lenses.

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  • Christoffer Wallstenius

    Was it fresh water or sea water? Water itself is actually not all that dangerous for electronics and mechanics, as long as it's pure. Salt water is the worst, because the salt cenducts electricity, creating short circuits in the electronics.


    Can you focus the lens manually? Will the camera let you take a picture if you focus manually? have you cleaned the contacts at the back of the mount? The contacts are for communication between the lens and the camera, and if that communication doesn't work because the contacts are dirty, the camera won't let you take any pictures.


    Please let me know if this helped.

×

5 Suggested Answers

Agent Allan
  • 480 Answers

SOURCE: The Auto focus just stop working

Hey Sammymalone,
This lens should have a 1 year manufacturers warranty on it, and if my guess that the USM motor is burned out is true I would have it serviced by an authorized service technician. Before you do this though I would try cleaning the lens contacts to make sure it is communicating with the camera body. I of course am going on the assumption that you have tried other lenses on the camera body to make sure the problem is the lens and not the body. I hope this helps!

Sincerely,
Allan
Go Ahead. Use Us.

Posted on May 29, 2008

  • 2 Answers

SOURCE: My camera lense will not focus automatically or manually.

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

  • 1 Answer

SOURCE: cleaning inside Canon 50mm /f1,8 II

Hi,

you can have a look here:
http://www.ejarm.com/photo/ef5018iidis/
and here:
http://nis-lab.is.s.u-tokyo.ac.jp/~ybando/rgb_filter/disassembly.pdf

HTH,

Jean-Marie.

Posted on Jan 19, 2009

  • 421 Answers

SOURCE: Canon EF 75-300mm f/4-5.6 III USM Lens

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

  • 1 Answer

SOURCE: Canon 50mm f1.4 lens focusing failure

http://www.fotomozaic.ro/artikel.php?idstory=225&s=1

Posted on Jul 13, 2010

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Cleaning inside Canon 50mm /f1,8 II


Hi,

you can have a look here:
http://www.ejarm.com/photo/ef5018iidis/
and here:
http://nis-lab.is.s.u-tokyo.ac.jp/~ybando/rgb_filter/disassembly.pdf

HTH,

Jean-Marie.

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1 Answer

The Auto focus just stop working


Hey Sammymalone,
This lens should have a 1 year manufacturers warranty on it, and if my guess that the USM motor is burned out is true I would have it serviced by an authorized service technician. Before you do this though I would try cleaning the lens contacts to make sure it is communicating with the camera body. I of course am going on the assumption that you have tried other lenses on the camera body to make sure the problem is the lens and not the body. I hope this helps!

Sincerely,
Allan
Go Ahead. Use Us.

May 29, 2008 | Canon Normal EF 50mm f/1.4 USM Autofocus...

1 Answer

Wet elph


That kind of submersion is usually a lethal thing, plus turning it on while still wet could deliver a nice killing blow, just to make sure it's dead... you passed current through conductive water spread inside the electronics. Don't mean to discourage you, there's always a chance, and you could take it for a shop to give you the final verdict, but if you told them what it went through there's a chance that they won't even bother opening it up. Sorry, at least life aint boring? ;[

Jun 24, 2006 | Canon PowerShot SD400 / IXUS 50 Digital...

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