Don't update to the 1.01 firmware! It breaks autofocus

Started Jun 17, 2008 | Discussions thread
viking79 Forum Pro • Posts: 14,156
Mine did that TOO, with 1.00, no upgrade, more

Mine did the EXACT same thing with the 16-50mm (without the firmware update). I returned the lens thinking it was the lens (30 day return policy), because it only happened on that lens, but I had no other SDM lenses to try.

First my SDM stopped working, then live view triggered the shake reduction to go nuts and was very unstable. Literally the picture was jumping all over the place and the camera was shaking like everything.

Creepy, I wonder if this is a systemic issue or something random.

Thanks for sharing, email me if you find out what it was (my camera isn't covered by warranty so I was going to ignore the problem).


candidasa wrote:

Well, I've cleaned the lens and mount contacts, re-downloaded and
re-run the firmware update but the problem is unchanged. I think it
is hardly a co-incidence that one minute the SDM AF works fine, then
I update the firmware and suddenly it can't focus on anything anymore.

However, I've now discovered something even more bizarr. When I
switch on live view with the 16-50mm lens attached shake reduction
now kicks into overdrive. It sounds just like the mirror cleaning
phase at start-up, loud clunking, but it is continuous. I can see the
live view image bouncing all over the place. Turning the shake
reduction off with the switch on the back makes no difference. It
still does the shake reduction overdrive. Turning the lens and body
to MF also makes no difference.

However, if I attach an older MF-only lens everything works fine.
Live view is normal. Unfortunately, I don't have any other SDM lenses
to test this on.

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