Have the A 400 also. It is a good lens. Two things I wish were different about it. 1. It is a liitle stiff to focus. 2. Wish all teleconverters worked properly. Many ( non Pentax) have trouble with the 5.6 max aperture. It shows up as a 2.8 lens!
Eric just repaired and adjusted the lens. He does good work. Highly recommended. Wish Pentax would come out with new af version with internal focus.
thanks
barondla
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