Tamron Adaptall 28mm f2.5 with Pentax K mount brand_Chinon The Nikon MC-20 is a

The Nikon MC-20 is a compact cable release for cameras with 10-pin connectors

8D PC Micro-Nikkor lens

this lens also has a pretty quick f4 constant aperture throughout its zoom range

I'm not sure if it's fair to say that the Nikon 200-400mm f4 ED Nikkor lens bombed when it was originally available

Tamron Adaptall 28mm f2.5 with Pentax K mount brand_Chinon The Nikon MC-20 is aThe Tamron Adaptall 28mm f2. 5 lens is a solid little lens with a pretty quick f2. 5 aperture and good image quality. Minor internal dust, smooth focusing and diaphragm. Adaptall lenses have interchangeable mounts; this one is supplied with a Pentax K M mount.