My 24-105 f4 has been in twice for motor and or ribbon cable replacement just
from normal use. Googled it and it’s a known issue amongst users. These lenses
have delicate ribbon cables in them that can break from years of focusing and
zooming. Took it to a non-canon repair 1st time and they put it back together
wrong so that the focus was way off and then had to take it to canon which
fortunately has a repair place here in BKK.
So in your case can’t hurt to have Canon take a look unless they no longer have
parts for it but I would think you’d notice if anything was off.
Sent from Yahoo Mail for iPad
On Wednesday, March 4, 2020, 11:56 PM, mark@xxxxxxxxxxxxxxxxxx wrote:
Ok it was bound to have happened sooner or later, but camera and lens finally
got knocked over while on a tripod. Its the first time since Ive owned the
Canon 28 80 2.8L that it has had any kind of a hard impact, and owned it over
15 years. The impact wasn't that hard either, but I just cringed when I saw it
in the floor.
Question How closely are these things calibrated? No broken glass. No nicks
that I can see right away. No lens cover on it when it fell, but did have a UV
filter on it. Could this have knocked something out of calibration so that it
needs to get checked? Mainly worried about the auto focus. Is it possible for
the electronics to think its in focus at a given point, when it isn't? Never
really understood how much of the auto focus system is in the body, and how
much is in the lens. The body is a Canon 50D which is at the end of its life
cycle or past it anyway. The lens is what I hoped would last the rest of my
photographic days.
Thanks in advance. Hoping for reassurance, but it is what it is.
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