FWIW with this ancient thread... I've had two Soligor lenses. The first was an FD mount 21mm that came with my first "real" camera-my A-1. I used it some, but never really warmed up to it(I didn't aprpeciate WAs in those days like I do now) and Ebayed it for a decent price that I've long since forgotten. Much, much more recently I picked up an F/AI mount 100mm f/2. It came the same way I buy a lot of 3rd party lenses-it was in a bag with a different camera I'd bought(maybe an EL2 or something along those lines). I put it to the test against the venerable Nikkor 105mm f/2.5(Sonnar-type) and found that it resolved decently at similar apertures to the Nikkor when used on my D800. It may have been a bit sharper, it may have been a bit softer, but really that was splitting hairs. What did stand out to me, however, was that even used in the shade it had less contrast and a whole lot less "punch" than the Nikkor. Consequently, once again, the Soligor went on Ebay and brought what I thought was a strong price(nearly enough to pay for the camera I bought it with) and the Nikkor is still in frequent rotation especially with slide film on manual cameras.