With the ZX-M, does the lens open and close when you move the aperture ring
when the lens is mounted on the body? (You can check this better with a
flashlight.) And does the viewfinder lighten and darken in DOF mode when you
move the mounted lens's aperture ring? If so, you're okay. In my case,
nothing happens, so I'm sure the lens is broken...
Skip
Subject: Re: Help! Is this lens busted?
> Now I'm worried. I picked up my Vivitar 18-28 PK-A mount from the repair
> shop last week. The front part was a tad loose and they tighten it back
up.
> Now looking through the back of the lens and moving the F stops, the
> aperture stays the same. When I push the small protruding lever with my
> finger, it opens. I tried it both on my ZX-M and MZ-10 and moved the
> F-stops, and the meter responds as it should. Is the meter fooling me (I
> haven't had a chance to run a roll of film throught) or is the camera
> controlling the F-stops properly?
> thnx - Martin
> --- [EMAIL PROTECTED] wrote:
> > Skip,
> >
> > Last year I bought a Kiron 105/2.8 1:1 macro lens from a mail-order
> > dealer.
> > It was advertised to be in EX condition. When I tested it mechanically,
I
> > found it to have the exact problem that you have! I took it to my local
> > dealer, an extremely knowedgeable camera buff. He advised me that the
> > spring that is supposed to close the diaphgram is either missing, out of
> > place, or weakened. He added, "Send it back. If the dealer is any good
at
> > all, he'll fix or replace it."
> >
> > Sure enough, the dealer was extremely apologetic. All used lenses are
> > supposed to be tested, he explained, but this one somehow must have
> > slipped
> > through the cracks. One month later, it arrived, repaired.
> >
> > It probably helped that I first emailed him in a tone that did not put
him
> > on the defensive. Since it worked so well for me, here is my letter for
> > one
> > and all; the subject line read, "Kiron PK Macro: Diaphragm Problem":
> >
> > "I'm afraid there's a problem with the Kiron PK 100/2.8 macro that I
> > picked
> > up from my Post Office last Tuesday (Nov. 21): The diaphgram won't
close;
> > it stays fully open, both on the camera and off. My local dealer
examined
> > it and believes the diaphgram spring is missing or loose. He added that
> > this could not be a result of an impact (recent or otherwise), because
> > there are no scratches or dents anywhere.
> >
> > "I discovered the stuck diaphgram over the holiday weekend, when I
removed
> > the lens from the SLR and looked through the rear element while rotating
> > the aperture ring. On the camera, the lens correctly tells the camera
what
> > aperture it "should" be set at; the shutter speed changes accordingly.
> >
> > "I assure you my SLR with the lens on it was cradled in my padded
> > camera/lens case until then.
> >
> > "I would like to return the lens. Where do we go from here?"
> >
> >
> > --------------------------------
> > PS to Pentax discussion list: Quality control wasn't this dealer's only
> > deficiency. After instructing him--and later reminding him--to send the
> > lens to my work address or I'd be dead meat, he sent it to my home
> > address.
> > Lucky for him, I was able to intercept it at the Post Office. Then,
after
> > repairing the lens, his "shipping department" sent it again to my home.
At
> > least that time I could honestly tell my wife it was a repair job.
> >
> > Paul Franklin Stregevsky
> > [EMAIL PROTECTED]
> >
> >
> > -
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> > visit the Pentax Users' Gallery at http://pug.komkon.org .
> >
>
>
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