Nikon RD2 brand_Blazes Photographic 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)

5cm and Summicron 5cm

and medium format cameras

all functions are good

though: this one's just for the accessories

Nikon RD2 brand_Blazes Photographic The Nikon DK-17M is aThe Nikon RD2 is a simple 35mm point and shoot camera with an autofocus 35mm lens, self timer, motor wind, and not much else. But that's OK! In good working order, with a clean lens; there is some cosmetic wear, but nothing dramatic. Includes two AA batteries, but it can also run off a single CR123. The date back requires a CR2025 battery (not included) and presciently only counts dates up to 2019. Includes original box and manual.