04-10-2015 07:42 PM
The autofocus on my Canon 18-55mm is malfunctioning and I'm afraid it may be broken.
All the internet research I've done points to issues electronic, but I believe this to be mechanical simply because of the noise it makes. With the lens set to AF, it does nothing, but makes a slight whirring sounds as if the camera is trying to, but can't focus the lens. In MF, turning the focus ring makes soft clicking sounds.
The autofocus works fine on the other lens I have.
The lens has not been dropped. I take really, REALY good care of my stuff! Any other recommendations or bits of advice are much appreciated!
04-11-2015 12:08 PM
Sorry, but it sounds as if the AF is broken or worn out. The "clicking noises" do suggest a mechanical failure. But to be sure, if possible, try the lens on a different camera to see if it works properly. Also, carefully clean the lens-to-camera contacts on the rear of the lens. Just use a clean, lint free rag lightly dampened with a couple drops of isopropyl (rubbing) alcohol. Also operate the AF on/off switch a dozen times or so... those switches are usually "self cleaning". If for any reason they get some oxidization or dirt inside, operatiing them will clean them.
To be honest, I don't have much hope that any of the above will "fix" the lens, because the noises suggest it's trying to AF, but failing. But it's easy and doesn't cost anything to try any of the above.
If none of the above helps, you can look into repair, but unless it's still under warranty it might be more cost effective to simply replace with a new lens. Depending upon which version of 18-55mm yours is, a newer one or some other lens alternatives might be a nice upgrade anyway.
But first, a common reason the AF system gets damaged is manually overriding the auto focus of a micro motor lens without first turning the AF off at the switch. Canon warns not to do that with their micro motor lenses. On the other hand, their STM (stepper motor) and USM (ultrasonic) lenses both will tolerate manual override of AF without need to first turn it off. So, if yours is the micro motor version (i.e., it doesn't say STM on the lens... there is no USM version 18-55) and you weren't careful about turning off AF before focusing manually, this might have been the cause of the problem.
Currently there are two versions of that lens offered: EF-S 18-55 IS II sells for about $200 and EF-S IS STM costs about $50 more. You'll have to compare the cost of repairing the one you have, with these prices. But I also believe both current 18-55s are optically improved from the earlier version. In addition, the STM has improved AF performance (faster, smoother, quieter), a non-rotating front barrel (preferable if using filters such as polarizers), and tolerates manual focus override.
Or, if your budget allows, you maywant to consider a further upgrade such as the EF-S 18-135mm IS (also avail. with STM for about $50 more), EF-S 15-85mm IS USM, or EF-S 17-55/2.8 IS USM.
04-11-2015 12:33 PM
amphoto1 makes some very valid points, and it does sound like it could be the motor in the lens. We have found that sometimes we're able to remedy this without a costly repair, but it is a multi-stepped process.
Hopefully this solves your problems, and you never have to worry about it again! With my personal lenses that are not USM or STM, I always store and transport them with the AF/MF switch in the MF position. This disengages the focusing motor and prevents any accidental damage to the auto focusing motor.
If this didn't solve your problem, please feel free to click HERE to contact us for additional troubleshooting, and explore other options that might be available to you.
11-21-2015 03:49 PM
Hi Julius, I'm experiencing marcosochoa's exact issues except my lens doesn't make any clicking noises. When it's on AF it does sound like it's trying to focus but it doesn't manage to. I've tried your suggestion without any luck. Do you have any other advice?
Thanks in advance!
11-26-2015 01:16 AM
12-15-2015 12:50 AM
12-15-2015 07:26 AM
Hi....I had the same problem with my AF lens not working. I found on another forum someone who suggested to do this:
"Pulling gently on the focus ring worked for us. Slight pop, maybe 1/16" movement, and the lens is working again!"
I tried it and INSTANTLY my lens is working. I continued reading just a few more comments to see if others related to it and there were SEVERAL people who stated that it worked for them also. I AM THRILLED that I won't have to purchase a replacement lens. DEFINITELY TRY IT. I twisted it (slightly hard because what did I have to loose at that point) and it gave a loud pop but it did the trick!!!
I think I'm glad I don't own that lens.