Roof Prism Binocular Design

They made the offset zig zag shape of the porro prism design look as old fashioned as propeller driven aircraft.

Roof prism binocular design.

There is also a difference in image brightness. Heavier design zig zag shape not so easy to grip. Roof prism binoculars were compact light and comfortable to hold. These strong binoculars come with a powerful 10x magnification and 42mm objective lens for better visibility of space.

Porro prism design has a jog in the light path through each barrel. Roof prism design looks as if the light goes straight through. Increase in popularity after the introduction by zeuss and leitz. Standard design in use till 1960s.

The gosky roof prism binoculars are another good product. The thompson center line of binoculars offers top level quality at a value packed price point. 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. There are several different roof prism combinations that can be used depending on the design and purpose and desired features of a roof prism binoculars.

Roof prisms designs create an instrument that is narrower and more compact than porro prisms. Compact lightweight and comfortable to hold. It consists of a reflective surface with a metallic mirror vapor steam coating eg silver.