Question about Canon EF-S 17-85MM F/4-5.6 IS USM Lens

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Focus hutning with Canon EF-S 17-85mm f/4-5.6 Image Stabilized

I hav been using this lens (Canon EF-S 17-85mm f/4-5.6 Image Stabilized) for one year without any problems, starting yesterday I began experiencing focus hunting at full zoom and when it stops the image is not focused. Any thoughts are very welcome!

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I had this problem too, then my camera started getting Error 99 (there is some problem) and not working.
If you look at this website and follow the steps under Update 2
http://www.richardsnotes.org/archives/2005/04/29/50mm-lens-contact-points/
I think you will fix your problem. The connections between lens and camera probably have a little dust in them, use a soft rubber eraser to clean them. Make sure no dust or pieces fall into the camera or lens when cleaning!

Posted on Sep 08, 2009

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Canon EF-S 18-55mm f/3.5-5.6 USN Lens won`t auto focus


Try cleaning the electronic contacts on the lens and camera.

Jun 30, 2017 | Canon EF-S 18-55mm f/3.5-5.6 USN Lens

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The camera will not fire the shutter when I use my 17-85 lens on AUTO FOCUS. It will not let me manually focus as well. what can I do.


1. First of all, make sure the lens is aligned properly and it's not loose in any way. The camera will immediately recognize the problem and will not let you fire the shutter.

2. Allow your lens to auto focus on an object (preferably something that's on your wall). See if it detects the object when you half press the shutter, and once it does press it down all the way.

3. If this is still not the case, the lens itself may be causing the problem. Make sure your camera is compatible with the lens (though most Canon lens are compatible with the EF-S series, it's still wise to check in Canon.com)

Jun 18, 2011 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

1 Answer

Error 99 and jerky fixation of focus between 17 and approxinately 30 mm works perfectly at zoom lengths beyond this with normal rapid fix of focus and records image normally. the error and failure to...


'Error 99' indicates some problem with the AF contacts. This is a common error in Canon lenses. It could indicate a very simple problem like dirty contacts or a much serious one like the breakage of USM cable.
As a first step, you can try cleaning the lens and body contacts (the metal contacts between the lens and body) using a pencil eraser. Be careful to hold the body facing down so that no dust falls inside. After cleaning both the lens and the body contacts, re-attach the lens and try shooting. If the AF does not work still, you need to take the lens to an authorized service center.
For the jerky focusing ring, you need to get the lens serviced by an authorized service center.

Aug 28, 2010 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

1 Answer

18-55 lens not doing auto-focus


I offer you to buy Canon EF 24-105mm f/4 L IS USM Lens. This gives very good performance for your studio work and specially for portre. It has Image Stabilization and Ultrasonic Motor. Other professional lens are very expensive. It has red ring.
Please check the link below.
http://www.the-digital-picture.com/Reviews/Canon-EF-24-105mm-f-4-L-IS-USM-Lens-Review.aspx

Regards

Apr 13, 2010 | Canon 28-135mm f/3.5-5.6 EF IS USM AF Lens

1 Answer

Canon EF 75-300mm f/4-5.6 III USM Lens Auto focus motor keep working back and forth but lense is not able to stop on focus right. Had eror 01 also sometime with manual focus.


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.

Jan 17, 2010 | Canon 75-300mm f/4-5.6 III USM EF Lens

2 Answers

The auto focus will work but the motor seems to keep running after it beeps.


If this lens is Image Stabalized than the motor will run for 2 seconds after focus.

Aug 03, 2009 | Canon 75-300mm f/4-5.6 III USM EF Lens

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Auto focus does not work on the 135mm


hi i am sagha a camera repairer from mumbai, i have gone through such problems much oftenly,in your case i think it is the internal problem with the flex board inside the lens which is multitwisted on metal plate after prolonged use becomes stiff & brittle and creates hairline cracks on the pcb which in turn breaks the tiny tracks & leads to malfunction at 135 mm.

May 26, 2009 | Canon 28-135mm f/3.5-5.6 EF IS USM AF Lens

1 Answer

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.

Dec 20, 2008 | Canon EF 70-300mm f/4.5-5.6 DOIS USM Lens

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