Typical for most medium to high-end Nikkors the build quality is very good. The outer barrel is made of good quality polycarbonate with a sleek finish. The rubberized focus ring operates very smooth and slightly damped. The AF 85mm f/1.8 D is a true IF (internal focusing) design so its length remains constant regardless of the focus setting and the front element does not rotate. Using a polarizer is therefore no problem. The lens has no internal AF motor and relies on a slotted drive screw operated by the camera. As a result the AF generates a moderate degree of noise. However, the AF speed is very fast thanks to a rear-focusing system. For more exciting information about the great lens please follow me photozone.
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