Roof Prism Types

Zeiss has famously made a number of a k binos over the years though most roof binos use s p.

Roof prism types.

The common roof prism binos use either the s p or a k configurations. As these prisms are easier to make they are cheaper to buy. This is why roof prism binoculars have an aligned eyepiece to objective lens construction. Both types of prism have advantages and disadvantages.

It uses an amici roof followed by a rhomb. They re more compact and streamlined lighter weight and much easier to carry around than the bulky porro style binos. There are three main types of roof prism binoculars namely amici schmidt pechan and abbe koenig. Porro prism vs roof prism.

Now there are a few variations of the roof prism design. If you see a pair of straight tube binoculars there s a good chance you re looking at a set equipped with roof prisms. The prisms are usually coated to increase reflectivity and to keep the light waves in the right direction. Roof prism binoculars vs porro prism binoculars a comparison roof prism binoculars.

The simplest roof prism is the amici roof prism with other common roof prism designs being the abbe koenig prism the schmidt pechan prism and probably the best known being the roof pentaprism pictured here. The only current bino use of the amici roof prism i can think of is the apm apo 90 bt.