Summary: I recently purchased a Nikon PB-6 Bellows to improve my capabilities for macro photography. I had my light table set up and had gotten some cut, but unmounted stones from a friend to photograph and was ready to roll. I opened my new PB-6, installed a lens and went to attach to my camera (D-300). It wouldn't fit because of the hand grip!I promptly ordered the PK-12 Extension Tube and was on my way when it arrived several days later.
Pros: Durable, Easy To Use, Improves Product Function, Lightweight