10-08-2018 10:46 AM
Solved! Go to Solution.
10-08-2018 12:26 PM
If it is only a few months old, call Canon and send it back. It appears that the encoder is broken.
10-08-2018 11:21 AM
It is a focus by wire system, so it appears that something is broken inside.
Sometimes it seems that it takes a while to wake up the focus system, in other words, it might take a few turns to get any movement at all. Did you try that?
Are you trying when the camera is in focus/exposure mode just after you half press the shutter button?
10-08-2018 11:26 AM
10-08-2018 12:26 PM
If it is only a few months old, call Canon and send it back. It appears that the encoder is broken.
10-12-2018 09:10 AM
@kvbarkley wrote:If it is only a few months old, call Canon and send it back. It appears that the encoder is broken.
Like the OP, I thought that only STM lenses were focus-by-wire in manual mode. Is that not the case?
11-15-2022 04:02 PM - edited 11-15-2022 04:07 PM
I grabbed my 135 f2 L lens and manual and auto just quit working! No explanation why. My favorite lens!
I sent it in and the wanted $600 to repair it. OMG. I have a 100mm f2.8 that just the auto focus quit working. They want $325 to repair it. What is going on with canon lenses???
10-08-2018 12:28 PM
10-12-2018 09:22 AM
09-24-2020 02:08 PM
I had the same problem with my 18-135 IS STM. The lens acted like it was still in AF when I switched the button from AF to M. I changed AF methods in the menu from FlexiZone to Quick Mode, and the problem went away. Oddly, when I then switched back to FlexiZone the lens continued to work in both manual and auto focus.
07-30-2022 03:56 PM
The switch on the side of my 24-105 lens is focus/control. Manual focus does not work with either.
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