Originally posted by Docrwm Thanks, I had seen it at B&H. My problem with the Sigma 30 is that there are some rather negative issues reported about it. For example, in Ken Rockwell's review he said that there was a design flaw that causes the manual focus confirmation light not to work properly during manual focus override, that the AF often focused slightly in front of the subject (and with the shallow DoF in a 1.4 lens that can be a serious problem), and that there was an issue with a miscalibrated diaphragm that led to overexposed images.
Cant understand the focus indicator issue. Does the body use phase detection or contrast detection? So AF in pentax bodies should not be any problem. Right?
As for the front/back focus, k20 k7 and k5 can fine adjust AF. F1.4 has razor thin DOF, so fine adjust is a must anyway.
As long as the lens does not have focus shift issues, that should be ok to use.
Back to the OP,
That 35/1.4 looks so massive that make me dont want it.
Ok i may need more execises to use this lens...