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

Open Question

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.

Posted by on

  • 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

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My canon fd 50mm 1.8 lens will only focus close up...I can't bring anything further than 6 or 8 inches away into focus


Check to see what focus mode you have selected. If it is on manual focus MF then use the narrow ring at the very end of the lens to make adjustments.

Dec 27, 2012 | Canon FD 50mm f/1.8 S.C. Lens

2 Answers

Canon 50mm f/1.8 lens is not focusing.


I had the same problem with my ef 50mm 1.8. I used it on a cold day and broke off one of the internal gears. I used it for almost a year before I got the guts to take it apart and fix it. There are instructions online on how to take it apart, scary at first but not that hard overall. I used a small drop of crazy glue on the gear, put it all back together and just like new.

Jan 27, 2010 | Canon EF 50mm f/1.8 II Lens

2 Answers

Canon ef 50mm 1.4 can't focus <1m


If the AF motor is still alive + spinning, this should be fixable without any replacement parts.
Following URLs might be useful:
http://www.flickr.com/groups/canon_50mm/discuss/72157603775874649/
And this one - detailed instructions how to dismantle this lens and fix the issue similar to yours.
http://www.fotomozaic.ro/artikel.php?idstory=225&s=1

Hope this helps - good luck!
Raf

Jan 30, 2009 | Canon Normal EF 50mm f/1.4 USM Autofocus...

1 Answer

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.

Sep 28, 2008 | Canon EF 50mm f/1.8 II Lens

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...

Not finding what you are looking for?
Canon Normal EF 50mm f/1.4 USM Autofocus Lens Logo

Related Topics:

93 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Cameras Experts

kakima

Level 3 Expert

98879 Answers

TC CAMERA REPAIR.Com...

Level 2 Expert

164 Answers

old marine
old marine

Level 3 Expert

1573 Answers

Are you a Canon Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...