ZEISS Binocular School
Objective Lense Diameter
The objective lenses are the front lenses. The diameter of the objective lens is expressed in millimeters. As with the aperture of a camera lens, the size of objective lenses determines the amount of light that can enter your binoculars.
It combines with magnification, exit pupil, type of coating and type of prism to determine overall light transmission efficiency.
Magnification
Objective Lens Diameter
Field-of-View
Twilight Performance
Height
Width
Weight
Exit Pupil
Interpupillary Distance
Focusing Range
Advanced Optics System
Prisms
Stray Light
Coatings
Waterproof