Carl Zeiss Otus Apo Distagon 55mm f1.4 ZF.2 T* dup-review-publication The Nikon HN-23 is a

The Nikon HN-23 is a round metal hood for 80mm or longer lenses with a 62mm filter thread

What we can say for sure is that the mark has no effect on image quality

and the leather bellows are excellent

Minolta Maxxum DSLRs use this foot

with some internal dust and haze

Carl Zeiss Otus Apo Distagon 55mm f1.4 ZF.2 T* dup-review-publication The Nikon HN-23 is aThe Carl Zeiss Otus Apo Distagon 55mm f1. 4 ZF. 2 T* is a no compromises "normal" lens for Nikon F mount. Well, there's one compromise: it's huge, and it weighs more than a kilo. Also, it's manual focus. Other than those two compromises, though, no compromises! This is a beautiful, sharp lens for folks who are looking for the best possible performance at any aperture. Smooth focusing, clean glass. Includes hood.