I dont have a SP so I dont how the SP will stake up, but I do have a Konica S3 S2 and a Canon, with the 1.7 50mm in both manual and auto focus. The best lens is the S3, rated by many as one of the sharpest sort of wides made, but the S3 is only auto exposure, you can fool the meter by adjusting the ISO up and down to some degree. The Canon has a very good lens and as with the S2, has manual and auto exposure, I find the rangefinders on all to be spot on. The Canon auto focus was a first generation af, same lens as the manual focus lens but has no exposure override. My only grip is that Canon uses 48mm filters which can more difficult to find. In most cases I carry the Cannon, second choice is the S3, last is the S2. For features Canon for lens S3.