Mamiya Lenses

Mamiya Sekor 80mm F/2.8

Originally published: April 3, 2011

This lens is decently fast for medium format. In fact there is only one other lens faster the Mamiya Sekor 80mm 1.9 C lens which someone somewhere called “the Noctilux of medium format”. Basically what I’m saying is that this lens is comparable in every way to a 50mm 1.4 lens. It has an equivalent focal length and a fast aperture. Its very good and a must have in any Mamiya 645AFD Kit. Or any 645 camera kit.

When buying a Mamiya 645AFD this is usually the lens that they include with purchase. This is because an 80mm lens is the best focal length for the camera. The Film area of a 645 camera is appropriately 6×4.5cm. If you draw a line from corner to corner and find the hoptenuse of that line, you would find that it is 75mm. People much smarter then me figured out that 80mm works a little bit better, but thats where the name “Standard Comes from”.