I've had numerous Pentax 85mm lenses: SMCT 85/1.8, two SMC-Pentax 85/1.8, M/85.2.0, and two A*85/1.4
My favorite is the SMC-Pentax 85/1.8, often described as the K85/1.8. Optically the A*85/1.4 is a little better, and when used on a tripod the differences between it and the K85/1.8 can be seen. Bokeh is a little different between the two lenses, although neither produces poor OOF images. However, when used hand held any qualitative difference between the two lenses is reduced.. The A*85/1.8, being larger and heavier, is, for some people, more difficult to hold steady, and picture quality can sometimes suffer. The smaller, lighter K85/1.8 is easier to hold - and easier to carry around as well. The slightly brighter view through the A*85/1.4 can sometimes help focusing, although I believe that the choice of focusing screen can be a significant influence as well. I sold both my A*85/1.8 lenses because I rarely used them, much preferring the smaller, lighter K85/1.8 The above are my experience with these lenses. YMMV ... some people can handle larger, heavier lenses better than others. Sometimes the camera one uses with a lens is a factor. Shel "You meet the nicest people with a Pentax" > On Sun, 11 Dec 2005, John Graves wrote: > > Very nice pictures. Next time I will work harder. Has anybody tried a screw > mount 85 MM? Is the A 85 F1.9 the same lens in a new mount.?. Do I need to > start looking for the A or F 85 mm?? So many questions.....so little > money

