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07-06-2010, 09:22 PM   #1
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neverbnnba's Avatar

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Location: Lexington, Kentucky
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Is this a Pentax mount....I HOPE.

i picked up a super cheap old lens on shopgoodwill.com for $6 and I hope it's a pentax screw mount. If not I'll just use it on a 4/3rds body or something. shopgoodwill.com - #6405718 - Promaster Spectrum 7 1:4~5.6 70-210mm Camera Lens - 7/6/2010 10:06:18 AM

07-06-2010, 09:35 PM   #2
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Looks like a M42 to me.
07-07-2010, 04:45 AM   #3
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It looks like an M42 mount, so you will need to get an M42 to K mount adaptor

Also, it looks like an auto only lens, so you may need to force the aperture to stop down, by modifying the pin actuator.

I generally do this by taking the mount off the lens, and placing a spacer between the base of the mount and the lever the little pin pushes on, The perfect spacer is about 1/8 inch of refil tubing from a ball point pen.

there are threads on this mod, and it is removable if you want to resell the lens at some time.

Others have indicated that for $20 you can get an M42 mount that has a flange to activate this pin in the UK
07-08-2010, 11:33 AM   #4
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wow lowell thanks man! That's a mod I have to try!

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