So here I was last week, reading the focus to infinity problem thread, when
a little light went off. My brain suddenly flashed hey, you have this same
problem. It developed a couple of weeks ago on my Pentax LX. All my
lenses (SMC-M 50 2.0, SMC-M 135 3.5, SMC-A 28 2.8, SMC A* 300 2.8) seem to
want to focus a little bit before infinity. The 300 seems to have a range
line for infinity and it focuses at the beginning of that range line. The
manual states that it can focus at infinity anywhere in that range, but
since my other three lenses are not focusing correctly, I'm not confident
this one is either. Of course the net result tends to be that the focus
point in a bit off from where I wanted it. So I removed then lens, locked
the mirror up and took a look. All my foam seems fine, the round rubber
bumper that the mirror rests on in the down position on the right side
(looking into the camera) looks great. It is not sticky or mushy, in fact
it and all the foam looks relatively new. The only suspicious thing I see
is on the left side of the mirror box. The rest is metal. No rubber, no
foam, just metal. It is a little piece that the side of the mirror comes
to rest on. Can those of you with LXs confirm what is supposed to be on
the mirror rest on the left side (looking into the lens mount.)
If there is something there, is this something a local camera shop should
be able to fix, or do I need to this off to Pentax in Colorado. I'm pretty
sure the camera had a CLA before it was sold to me, hench the new foam and
bumper.
Thanks a bunch,
Jeff
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