Comments about Sigma Sigma 72mm Close-up Lens:
Bought this to use with my Nikkor 18-200 ED-IF VR. Brings the close focus at 200mm from about 11" down to about 6" from lens. 2/3 frame image without filter will fill frame with filter at 200mm at close focus. Maximum focus distance about 24" at 200mm or about 36" at 18mm.