On Wed, May 23, 2012 at 2:45 PM, John Sessoms <[email protected]> wrote:
> I presume when you say "it makes a noise when I rotate it", that you mean
> when you rotate the zoom ring?
>
> It shouldn't make any noise. It's a really sturdy, pro-quality build lens.
>
> It shows up in Photoshop as a smc PENTAX-F 35-105mm F4-5.6.

Thank you for your kind reply, John.

No, I mean that if I take the lens in my hand and roll my wrist, I can
hear a strange sound coming from about the middle of the lens.
Googling this, I found another person complaining of the same issue
and he said that he sent it in for service and when he got it back it
still did the same thing. I guess I don't care so much if the lens
performs as it should.

I'm building a little DIY LensAlign clone so I can adjust for any
front/back focus issues with it and see if I can get the truly sharp
images that people say this lens normally gives you. If not, I'll have
to assume that something is out of whack in there and send it in for
servicing.

I'm curious... if it shows up in Photoshop as a Pentax-F 35-105mm,
does that mean that it is also misreading the focal length that this
lens is set at (when doing image stabilization)?
If it is doing image stabilization for a 105mm focal length when the
lens is set to 200mm, that could definitely lead to some lack of
sharpness. I think I will see if I get better results with Image
Stabilization off and tripod mount it (which I guess I should be doing
to test for sharpness anyway!).

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