07-25-2017 09:03 PM
In reply to the last couple of posts (the lens is enroute to the repair facility so there isn't any new troubleshooting I can do):
- I didn't use the "Restore to Factory Settings" option, however I went methodically through every AF option in the camera menu and either changed or disabled the function to see if it had an effect.
- I was able to manually focus on subjects (even those within the 25 ft range), but I did not test the entire range of the manual focusing ring to see if there was any binding, etc.
- I have a standard UV filter on the lens that I never removed. The UV filter, however, looked clean and undamaged to the naked eye.
Thanks to all that are contributing to this discussion. You are a wealth of knowledge and information.
07-27-2017 03:18 PM
Update: Notification from Canon repair facility: "The USM in not functioning properly and needs replacement."
Parts, labor, and shipping: $361.11
Thanks for the update.
Well worth the repair, even in KEH's 'bargan' condition the lens sells for 3 times that.