Mamiya medium format telephoto at 250mm with leaf shutter and f/4.5 aperture.
The Mamiya 250mm f/4.5 is a telephoto lens for a Mamiya medium format system, providing significant telephoto reach on the larger format. The 250mm on medium format provides approximately a 125-150mm equivalent depending on the specific format, enabling wildlife and sports photography with medium format quality.
Optical quality is good with the Sekor multi-coating delivering contrasty images at telephoto distances. The medium format negative ensures extraordinary detail even at the f/4.5 aperture. The built-in leaf shutter provides flash sync at all speeds for location work requiring fill flash.
Build quality follows Mamiya's professional standards with solid metal construction designed for reliable use. The lens is substantial but handles well on Mamiya medium format bodies that are themselves large and robust.
On the used market, the Mamiya 250mm f/4.5 offers affordable medium format telephoto reach. For Mamiya system users wanting long telephoto capability with the detail advantages of the larger format, it provides functional reach at modest prices.