Long time lurker, first time poster.
I recently picked up a Minolta 28-85mm f/3.5-4.5 lens from B&H. By all appearances it is in excellent condition, however after taking some sample pics, it seems really soft. Attached is a comparison of some lenses I have, all shot at f8 and as close to 50mm as I could get. I took numerous shots, none of them are sharp from this lens.
Is this just a really soft lens or did I get a bad example?