Sigma 100-400mm f5-6.3 DG OS HSM Contemporary for Nikon F brand_Kirk This is a genuine Asahi

This is a genuine Asahi Pentax adapter that lets you mount Pentax 6x76 lenses on an M42 mount camera

and easy handling- a great combination that's made the 5d Mark III a favourite for professionals and advanced amateurs alike

and the four-speed Vario shutter is in good working order

with light finish wear from normal use and handling

Sigma 100-400mm f5-6.3 DG OS HSM Contemporary for Nikon F brand_Kirk This is a genuine AsahiThe Sigma 100 400mm f5 6. 3 DG OS HSM Contemporary is a reasonably compact full frame telephoto zoom lens with quick focusing, excellent image quality, and an effective image stabilizer. Cosmetic condition is good, with some finish wear; optics show light dust. This lens is designed for Nikon F mount DSLR cameras, but it will also work on most autofocus Nikon F mount film SLRs.