Carl Zeiss Planar 50mm f1.7 (MMJ) brand_Calypso The Nikon DK-17M is a

The Nikon DK-17M is a magnifying eyepiece for 22mm threaded viewfinders (like on the D3/D4/D5 series and the D800)

Now you can fire your compatible Hasselblad camera from 3 feet that way

Shutter speeds are good except for any provision to hold open the shutter: T and the preview switch do not hold the lens open to focusing position

Burglin’ city folk don't know it's a camera bag

Carl Zeiss Planar 50mm f1.7 (MMJ) brand_Calypso The Nikon DK-17M is aThe Carl Zeiss Planar 50mm f1. 7 is a standard lens for Contax Yashica mount SLR cameras. In very good cosmetic condition, with light finish wear from normal handling. Glass is clean, with only minor dust; focus and aperture work well.