Kata 3N1-33 monocular 9 is a specialized filter

9 is a specialized filter designed for shooting sunrises and sunsets

which makes it nice for manual operation

This SLR Magic Variable ND Filter Mark II is specially designed to minimize the weird uneven vignetting that sometimes afflicts variable filters

This conversion is not reversible

Does the company that makes Swiss Army knives have any special bag-making expertise

Kata 3N1-33 monocular 9 is a specialized filterThe Kata 3N1 33 is a well made bag with adjustable straps that can be set up as a backpack, shoulder sling, or a sort of suitcase, kind of? The main compartment has a multi opening system that provides access from the left side, the right side, or the front. Theres a second compartment for personal items and a couple of exterior pockets, too, and a large laptop pocket. In excellent condition, with light cosmetic wear. Interior dimensions of gear