12-19-2018 01:38 PM
"...when the lens zooms the cable flexes and certain cable positions ..."
OK, whatever, but that, means the cable would have to reattach or reconnect broken wires when it got all the way stretched out or all the way contracted. Plus doing so many times! I am still not going for it.
Flex cable breaking preventing AF for certain FL is real and probably due to what Jhoffman described. I saw it for myself when one of my nephews showed me his Canon zoom lens (can't remember which model). He sent it in for repair and it was the flex cable.
12-19-2018 01:47 PM
Of course anything is possible but did it stop AF at only either end or did it stop at one end or the other? Flex cables break a known condition but they don't fix themselves at either extreme end? The cable would have to be totally stretched out and then compressed up for the other end. I can buy it not working at one end or the other and not in the middle but both ends? Doesn't sound right to me but what do I know? I've been wrong before c'est la vie.
12-19-2018 02:23 PM
In my nephew's case, half of the lower FL did not work, the other half worked.