Antique Binoculars Carl Zeiss Jena D.F.6x30 manufactured in 1919.
Magnification: 6x
Aperture (lens diameter): 30mm
Field of view: 8.4°
Exit pupil diameter: 5mm
Apparent field of view (eyepiece): 50°
Minimum focusing distance: 3 m
Width: 16.8 cm
Height: 11.5 cm
Weight: 645 g
Date of manufacture: 1919