Objective diameter:  80 mm
Magnification:  20 x
Exit pupil: 4 mm
Eye relief (acc. to spec): 13 mm
IPD:  56 – 72 mm
RFOV:  3.3  degrees = 58 m
AFOV: 66  degrees (?)
Focus type:  IF
Prism system:  Porro I
Waterproof: yes
Weight (measured, with eyepiece cover and strap): 1‘974 g
Made in: Germany


The Steiner Observer 20×80, whichs looks and feels like a military instrument, plays a bit the role of “costly outsider” within the 20×80 market, but its narrow FOV aside, is well built, has sturdy mechanics and good optics.



see review section of APM MS 20×80 ED,


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