I had a problem like that with the M* version of this lens, the entire
front element group would unscrew and come entirely off. I never had
unsharp photos from it. because when I noticed it start to come un
screwed, I could just tighten it up again. The A* is solidly
connected. I'm not sure that I could apply enough torque to cause it to
come apart that way.
Tim Øsleby wrote:
I just had a similar problem with my K-500/4,5. It was unable to focus
at infinity. Maybe a bit soft at other focus distances too, but
infinity was the main problem.
I fiddled with it, and discovered that the front part of the lens had
unscrewed itself, moving the front element forward. It was the outer
tube that was loose. I tightened it, and now everything seems to work
properly again.
In fact it seems sharper than ever :-)
--
MaritimTim
2009/6/3 <[email protected]>:
Just what the subject says. I was out walking with a relatively full
kit and I spied what I thought was a Cormorant, but turned out to be
what looked like a diving duck of some kind. I mounted the the F 1.7x
adapter and the A*300, and couldn't achieve focus.
I thought it was the adapter, but after much fooling around, I was able
to confirm that the A* 300 can no longer focus to infinity.
Even when racked in to it's further focusing distance. The focusing
scale says it's focused at or beyond infinity but the focus point seems
to be about 200/300 yards/meters away.
I've used this lens to good effect for the last few years. So this
problem seems to be a very recent development.
Physically the lens seems to be rock solid. The helical moves from
minimum focus to infinity as smoothly as ever, shake it nothing rattles
yet there is something obviously wrong with the lens.
So does anyone know of a good lens repair place in the US, it's a cinch
that Pentax won't repair it, and the only good camera repair place I
personally had experience with has long since dried up and blown away.
(It would also help if they didn't charge an arm and a leg for repairs
since my budge is down to one or the other).
--
The free man owns himself. He can damage himself with either eating or
drinking; he can ruin himself with gambling. If he does he is certainly a
damn fool, and he might possibly be a damned soul; but if he may not, he is
not a free man any more than a dog.
--G. K. Chesterton
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--
--
The free man owns himself. He can damage himself with either eating or
drinking; he can ruin himself with gambling. If he does he is certainly a damn
fool, and he might possibly be a damned soul; but if he may not, he is not a
free man any more than a dog.
--G. K. Chesterton
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