The Mamiya 500 DTL is a 35mm single-lens reflex camera from the brand's DTL line, introduced in the late 1960s as part of an entry-level range of mechanical SLRs aimed at amateur photographers.

Sales data for the 500 DTL is very thin: a single UK auction hammer result on file shows the camera selling for £12 in 2022, which sits at the low end of the wholesale saleroom market for budget vintage 35mm SLRs. As of 2026 the price a 500 DTL sells for at auction is heavily condition-dependent, and clean, working examples with a functional meter would be expected to be worth more than untested or cosmetically tired bodies.