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02-14-2010, 11:20 PM   #1
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Please help me: is this Pentax K mount or not?

Please help me: is this Pentax K mount or not? I found this manual lens but the seller didn't know what mount it is.
Thank you, Edi

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02-14-2010, 11:33 PM   #2
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Hard to tell from your photo. Looks like a Nikon AI mount. [EDIT:] Corrected below to K mount.

Here's a place to compare lens mounts:

Rick Oleson's Lens Mount Identification Guide

Last edited by monochrome; 02-15-2010 at 07:05 AM.
02-14-2010, 11:35 PM   #3
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might be Konica AR - hard to say. What brand is the lens?
02-15-2010, 12:13 AM   #4
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Hi Edi,

Looks like a K mount to me. I just look for the locking notch about 2/3 offcenter to one of the bayonet lugs. The orange "line up dot" should be at 12 o'clock with the lens sitting as pictured.

Scott

02-15-2010, 12:33 AM   #5
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it is Vivitar series 1 70-210mm
02-15-2010, 06:18 AM   #6
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as others have noted it is a K mount.

BUT you will need to trim the protective flange for the aperture activating lever, back to match a K mount.

there are threads on this.

the protective flange interferes with something internal to the mirror box nd won't permit the lens to mount,

there are threads discussing this
02-15-2010, 06:32 AM   #7
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What Lowell said.
02-15-2010, 10:52 PM   #8
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Thank you very much for this informations!

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