This lens could go in either the CMC or MFC forum, but since I took the photos posted with the lens attached to my Pentax ZX-5 I will post here. Tamron apparently didn't sell as many of these lenses as they hoped since even after more than a decade this lens can be bought as NOS from several vendors. Another reason for using the lens with the ZX-5 was I wanted to see how the KA adaptall mount would work with the ZX-5. With the camera set at A and the lens at minimum aperture (f22) the camera provides program autoexposure. Like my 50mm f2 SMC A, it displays aperture and shutter info in the finder. Film was Kodak Gold 200 (found it 4 rolls for $6 at CVS).