Sigma 75-300mm question


rldenver

Link Posted 21/11/2017 - 23:38
Hello Pentaxians!

I recently ordered a used zoom lens and I can't mount it to my camera (Pentax K1). The lens is an old Sigma APO 75-300 f4-5. It has a plastic flange (or something) extending past the mount base plate (as pictured). The plastic over-lap will not allow the lens to make full contact with the camera. I'm will likely just file the plastic down, but I thought I would consult professional advise first . Any help would be much appreciated. Thanks, Rick




bforbes

Link Posted 21/11/2017 - 23:45
that does not look like a Pentax K mount at all. It should look like this link if you try too hard mounting it, it could damage the camera
Barrie
Too Old To Die Young

http://www.pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Last Edited by bforbes on 21/11/2017 - 23:49

johnriley

Link Posted 22/11/2017 - 00:14
No, that's not compatible.
Best regards, John

JAK

Link Posted 22/11/2017 - 01:22
If you were sold it as Pentax compatible you have a case to return it to the seller.
John K

stu62

Link Posted 22/11/2017 - 18:01
that is not pentax just checked mine and it is totaly wrong

mattie

Link Posted 24/11/2017 - 14:54
I've only had fleeting use of them so can't be entirely certain, but that looks a bit like a Nikon F-Mount?

As stated by others above, it's sadly not a Pentax fit, I'm afraid.

An example of an F-Mount Nikon lens
:

rldenver

Link Posted 27/11/2017 - 16:44
Interesting. Thanks for all the replies. Good to know it's not Pentax. I'll try and return the lens.
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