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Sagitta · 10-06-2014, 02:48 PM

That's an M42 screwmount, also called a Pentax mount colloquially by many, since Pentax popularized it back in the day. It needs an adapter to fit a K-mount..

majboyd · 10-06-2014, 04:24 PM

thx. I order one for another lens I bought so I'll see if it works.

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10-06-2014, 02:48 PM	#16
Sagitta Veteran Member Join Date: Feb 2011 Location: Maine Photos: Gallery Posts: 3,081	That's an M42 screwmount, also called a Pentax mount colloquially by many, since Pentax popularized it back in the day. It needs an adapter to fit a K-mount..

10-06-2014, 04:24 PM	#17
majboyd New Member Join Date: Sep 2014 Posts: 24 Original Poster	thx. I order one for another lens I bought so I'll see if it works.

Sears 135MM F. 2.8 208304 doesn't mount

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