The only thing you did not try is another lens on that body. There appears to be a problem with the feedback during normal autofocus. I think the only thing you can Autofocus Operation The Canon 18-55mm ƒ/3.5-5.6 IS II isn't a USM lens, but it does still employ a lens-based motor: the lens focuses fairly fast, but is noticeably slower than a USM lens Before you do anything, you need to try the lens on a friends camera. Or, try another 18-55mm on your camera. If your 18-55mm is broken it is not a good candidate for Dust Deletion Feature. (1) Self-Cleaning Sensor Unit. (2) Dust Delete Data appended to the captured image. (3) Manual cleaning of sensor. Recording Format. Design rule for Camera File System 2.0 and Exif 2.21. Image Format. Still: JPEG, RAW (14-bit, Canon original), RAW+JPEG. It not work at all. i think my lens is broken. its AF now.Thank you anyway for the information. Remove the lens and reinstall it. If it still doen't work check the contacts between the lens and body. There are what are called pogo pins in the body. If they are stuck then the electrical connection between the lens and body might be bad. Be careful when doing this becasue the intenals of the camera will be exposed. Try not to drop or get Thanks for the feedback. I guess I left a couple things out. I put multiple lenses on the same body. Basically I played musical chairs with the lenses and bodies. Other lenses work on thar body and the other but the problem lens does not work on either. Also I did not mention that it mechanically For this reason, if the lens is not securely mounted, there may be cases where the autofocus does not operate correctly. Please mount the lens securely, as shown in the image below. How to Check the [C.Fn IV: Operation/Others C.Fn-6: Shutter/AE lock button] Custom Function Setting Crystal: Thank you for your brilliant suggestion, my autofocus is now working again! I had tried the suggestions from Julius but no success, so I had nothing to lose by trying the gentle pulling on the focus ring and it worked - totally made my day! I also took note of the comments saying that the There are now two kit lenses available in the wide - moderate telephoto range: * the EF-S 18-55 f/4-5.6 IS STM * the EF-S 18-135 f/3.5-5.6 IS STM. The STM designation is the significant part. IT means that the lens does not autofocus through gears as per earlier models but uses a stepping motor and focuses using 'fly by wire' technology. TeIR.