I am selling this lens as I am using the K-1 camera and it is manual focus and an older full frame lens from film days. I bought it with the idea of using it in low light where I wanted to keep exposure times low at a reasonable ASA on the sensor. It works, but at f1.7 it is soft up to about f2.8 and only great at f3.5 and above. I have read that is true but on the K-1 it is simply exacerbated due to the sensor being so damn good. Disappointed but will go to a Sigma that I know will not be so soft.
Manual focus and in excellent condition and no play or slop in the focus ring.
$75 includes shipping to USA.
great lens to be used on macro with a reversing ring !i never shoot at close to wide open on any lenses .
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