Mamiya-Sekor 50mm f4.5 for Mamiya RB67 brand_Fotodiox back when Nikon was still

back when Nikon was still Nippon Kogaku

This D500 is in near-new condition

The Canon EF 300mm f4L USM is a high quality telephoto lens with quick USM focusing and Canon's premium L glass and construction

and everything works: shutter speeds are accurate

4 lens is designed for pre-AI Nikon F mount cameras- so it'll mount to those

Mamiya-Sekor 50mm f4.5 for Mamiya RB67 brand_Fotodiox back when Nikon was stillThis Mamiya Sekor 50mm f4. 5 for Mamiya RB67 is in excellent cosmetic condition, with only minor paint and finish wear. Good diaphragm blades, accurate shutter speeds throughout range. In excellent condition, with only minor cosmetic wear, clean glass.