Roof Prism Binocular Design

Heavier design zig zag shape not so easy to grip.

Roof prism binocular design.

It consists of a reflective surface with a metallic mirror vapor steam coating eg silver. Porro prism binoculars will inherently produce a brighter image than schmidt pechan roof prism binoculars of the same magnification objective size and optical quality because this roof prism design employs silvered surfaces that reduce light transmission by 12 to 15. More expensive due to higher manufacturing costs. They made the offset zig zag shape of the porro prism design look as old fashioned as propeller driven aircraft.

Increase in popularity after the introduction by zeuss and leitz. The most common today is schmid pechan s prism system. The roof prism lineup is feature rich including fully multi coated lenses and nitrogen gas filled making it waterproof and fogproof. Roof prism design looks as if the light goes straight through.

Porro prism design has a jog in the light path through each barrel. Standard design in use till 1960s. There is also a difference in image brightness. The thompson center line of binoculars offers top level quality at a value packed price point.

The gosky roof prism binoculars are another good product. Roof prism binoculars were compact light and comfortable to hold. Roof prisms designs create an instrument that is narrower and more compact than porro prisms.