The Visionary B4 range of binoculars provide excellent value for money with improved definition and clarity. Featuring high-quality BAK4 prisms and multicoated lenses the B4 range has a model suitable for most applications.
A 12x magnification binocular is considered the best suited binocular for plane and aircraft spotting as the high level of magnification allows good levels of detail to be observed over long distances.
This level of magnification is usual to consider the highest that can be used comfortably as a hand-held instrument (higher magnifications usually benefit from tripod mounting). 12x magnification is also a popular model for horse racing.
BAK4 prisms ensure a brighter image throughout the range of magnifications by maximising light transmission.
Efficient use of the light gathered is particularly important at high magnifications or when using smaller front lenses, as images appear darker.