Dave Weiss writes:
>I recently purchased a 300f4.0 (k) lens from KEH.
Congratulations on your purchase. Every original Pentax PK prime
is a masterpiece.
>According to Boz's site, the optical formula is 7 elements
>in 5 groups while all the subsequent 300 lenses were 7-8
>or 7-9. What specifically would more elements correct?
Well one thing it would "correct" is size! I suspect that more
elements were used to reduce the physical size of the lens.
>I could not find any specific info and the smc tak version to
>compare it to, but have seen the positive reviews it gathered
>a few weeks ago on this list. Would this be one of the
>kmounts which is essentially a redone screwmount lens?
They are different. The Super-Takumar and SMC Takumar have 5
elements in 5 groups. The older Takumar f:4/300 has 4 in 4, is
larger, and weighs more than the SuperTak/SMCTak.
Mark Rofini
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