The second is the lens diameter in mm: the larger, the
brighter the image. Forty millimeters already let a lot of light through. The
design with roof prisms is higher quality and compact, porro prisms are larger,
heavier shares are about does not overtake Dorr binoculars and
quality comes at a price this is important when buying binoculars. Further
criteria for the material are magnesium and aluminum alloys combined with carbonates that are tough and lightweight. In addition comes a good
handling by rubber reinforcement.
A universal binocular is the all rounder in binoculars uses
are versatile and there is a wide range. The range of the price and quality
classes is far apart. The transition to variants such as compact binoculars is
fluid. In addition there are anti-reflection multi coated lenses for maximum
brightness and contrast. The spherical optics brings a plastic as well as
distortion free and detailed view.
For focusing, a large and smooth focusing wheel is used. The
visual acuity at the edges decreases only insignificantly. A pair of binoculars
comes with two ratios the first one is the enlargement. The Eight brings in meters
away, as it meters away. Eightfold offers a largely calm, shake free picture.
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