The lens – I’ve never seen one of these before. I like the 75-105mm focal length for close up photos like portraits and detail shots. I didn’t expect to find a lens this nice for just a few dollars at a thrift store, but this one is very clean, and seems very well made.
Test shots. I believe all of these are wide open at f=2.5.
This shot is at the closest focus distance, and the background is almost at infinity (sun coming through far away trees).
I’m not sure how easy it is to find one of these, but if you do, I recommend it.