It's not unusual for a few (dozen!) of those balls to end up inside the
barrels, too. There should be 188 (or so) on either side of the flange.
That's pretty far off, focus wise. Any idea why it's off in the first place?
Any signs of impact, or lens separation?
Anyway, the focus adjustments are under the zoom grip. There are holes in the
ring to get to 3 screws underneath, and (depending on the version) one or more
set screws as well. Those are the adjustment at tele. On the zoom ring itself
are two screws -- those can be loosened and moved forward or backward to adjust
focus at wide. But I don't think changing either will correct that degree of
error -- something else is probably wrong....
Jim Brokaw wrote:
> I have a nice 35-70/3.6 zoom that won't focus to infinity. When the focus
> ring hits the infinity stop it is somewhere about 12-15 feet, not infinity.
> I already unscrewed the end and spilled all the little 1mm ball bearings...
> I got most of them back (I think).
>
> I didn't see anything obvious under the focus ring, so what is the secret?
> Any advice or help is appreciated.
>
> Thanks,
>
> Jim Brokaw
>
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