Roof prism binoculars were compact light and comfortable to hold.
Roof prism binocular design.
The roof prism lineup is feature rich including fully multi coated lenses and nitrogen gas filled making it waterproof and fogproof.
Increase in popularity after the introduction by zeuss and leitz.
There is also a difference in image brightness.
Standard design in use till 1960s.
The most common today is schmid pechan s prism system.
It consists of a reflective surface with a metallic mirror vapor steam coating eg silver.
Roof prism design looks as if the light goes straight through.
More expensive due to higher manufacturing costs.
Roof prisms designs create an instrument that is narrower and more compact than porro prisms.
Porro prism design has a jog in the light path through each barrel.
These strong binoculars come with a powerful 10x magnification and 42mm objective lens for better visibility of space.
Heavier design zig zag shape not so easy to grip.
The gosky roof prism binoculars are another good product.
They made the offset zig zag shape of the porro prism design look as old fashioned as propeller driven aircraft.
The thompson center line of binoculars offers top level quality at a value packed price point.