>I can't find any screwmount info- if this lens optically is like
>the K300/4, then it sounds like a good lens, esp. for $140, no?
>
>Taka

Taka, the K-mount 300mm is optically different from the Super and SMC 
Takumar. The 2 separate back elements of the screw lenses became 2 
doublets.  I'm sure Pentax did it to lower a bit some aberrations.  I 
own the SMCT and like it.  The Super-Takumar is probably as good as 
the SMCT, as multi-coating gives very little more to a tele lenses 
with few elements.

Cheers,

Andre
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