Some time back i was gifted a Olympus om10 and three lenses, I've now been gifted another three lenses but on a Ricoh (as I understand it, PENTAX) mount. They are:
Rikenon 50mm XR f2 L
Sigma 2x teleconverter macro
Sun 70-210 f3.8 zoom macro
From what I've been able to find online the Rikenon is probably the best of the bunch but it does have a protruding flange that looks as though it could be a problem. There is also apparently a pin that can jam the lens on a camera so it's hard to get off again.
The adapter I was planning on getting is a Fotodioxas per
http://www.amazon.com …ords=pentax+to+ef+adapter
but I'm very reluctant to get it before confirming it will work and the lens won't jam or otherwise damage the camera. If anyone can confirm, or otherwise, whether this combination will work? Any info on the Sun lens would also be appreciated since there is very little info online about them. It's probably very ordinary but having a play with the Sun/Sigma combination (420mm focal lenght) sounds a bit of fun if nothing else.
Thanks,
Hal55
