A big thank you to those who answered my question (below)
about the SMC Takumar.
In addition, you taught me a lot of other very interesting
things about Spotmatics at the same time.
Now here's a question I'm sure is pretty dumb (but I'm
willing to admit ignorance if it helps me learn):
QUESTION: Is the Pentax K1000 the same camera as the
Spotmatic F, except for the lens mount not being a screw
mount?
Or are there other substantial differences?
Thank you.
Robert McGraw wrote:
>
> I hope someone can answer a question about my Spotmatic F.
> Is the SMC Takumar the correct lens for the Spotmatic F?
> And if so, is it normal to feel resistence when screwing
> the lens on?
>
> Here's why I'm asking:
>
> My Spotmatic F came with a SMC Takumar 55mm f 1.8 lens. I
> assume (perhaps wrongly) that it's the original lens. But
> when I screw it on, I meet resistence (back-pressure) just
> before the lens is completely screwed in. I apply a slight
> pressure and the lens screws in completely, and works fine.
>
> I also have a Super Takumar 55mm f1.8 that *didn't* come
> with the camera, but it actually connects more easily to the
> camera. No resistence, no back pressure.
>
> This seems to be because the two lenses are different on
> the back.
>
> The Super has only the little pin that actuates the
> diaphragm. Nothing else.
>
> The SMC also has the pin, but on the opposite side of the
> mount there is a long slot with a metal lever of some kind
> sticking up.
>
> I can't tell what the lever is supposed to do, but it is
> somehow connected to the f-stop ring, because when I turn
> the ring, the lever moves with it. I suppose this has to do
> with the stop-down metering.
>
>
> Thank you for your time.
> --Robert
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