Pentax A* 645 super-telephoto at 300mm, finest Pentax optics with medium format resolution advantage.
The Pentax A* 645 300mm f/4 is a premium super-telephoto for the Pentax 645 medium format system with the A* (A-star) designation indicating Pentax's absolute highest optical tier. The 300mm provides approximately 237mm equivalent with ED glass and the finest Pentax optics.
The A* designation represents Pentax's most demanding optical specification, and the 300mm on 645 delivers super-telephoto reach with medium format resolution advantage. The ED glass controls chromatic aberration at this demanding focal length.
Build quality is premium Pentax professional with robust construction appropriate for the A* tier. The 300mm f/4 provides genuine super-telephoto capability for medium format wildlife and sports photography.
The Pentax A* 645 300mm f/4 is a rare premium super-telephoto commanding strong prices on the used market. The A* optical quality and medium format resolution provide unique super-telephoto capability.