What lens mount type is this?

[crzychicken]

500mm five star lens
I thought it was a pentax, but the mount is too small to be pentax.
I don't have much experience with anything other than canon ef and fd lenses.

 

[Gavjenks]

Looks like Konica to me. Possibly Minolta. They both use the whole "latch into a slot in the bayonet" thing. Kinda hard to tell for sure. You could probably distinguish between those two by measuring the exact diameter and comparing to figures online for the mount sizes.

 

[timor]

Similar to Minolta SR, but there is many things missing. Show us the front of the lens pls.

 

[Dao]

Maybe Minolta MC/MD mount

 

[KmH]

Here is a list you can search - Lens mount - Wikipedia, the free encyclopedia

 

[vintagesnaps]

You could try looking here - Parts 2&3 are linked at the bottom of Part 1.


KEH Camera Blog: The Lens Mount Guide: Part 1


We might need a lens mount thread stickied on here.