Kern Alpin 8×30

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Objective diameter:  30 mm
Magnification:  8 x
Exit pupil: 3.75 mm
Usable eye relief (measured from rim of eyecup): 6 mm
IPD: 44  –  71 mm
RFOV:  8.6  degrees = 150 m
AFOV (measured, rounded): 66 degrees
Minimum focus distance (measured): 2.9 m
Focus type: CF (direction of rotation from close to infinity: < anticlockwise)
Degrees of rotation of focus wheel from 3 m to infinity (measured): 365 degrees
Range of diopter adjustment (acc. to spec.): +/- 3 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 6.5 dpt*
Prism system:  Porro I
Waterproof: splashproof
Weight (measured, with eyepiece cover and strap): 502 g
Made in: Switzerland
*range of diopter adjustment not affected by position of focus wheel



The Alpin used to be Kern’s top non-military 8×30 model, with 10m more field of view than the same size “Pizar”. It was a popular example of a whole range of high quality 8×30 Porro binoculars from various manufacturers , on the market in the period between about 1950 and the early 1970s. Good central sharpness, not-so-good edge sharpness, bright image, lightweight, compact, mechanically impeccable (zero “rocking” of the bridge!). A nice detail: the central focusing wheel is placed at the front end of the central hinge and operated with your ring finger, not your index.


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