The Vivitar 18-52x80 MV-1852 Binoculars, based on the BK 7 porro prism design, offer variable magnification factors from 18x up to 52x for extreme close-up observation. Linear fields-of-view (@1000 yard/914.4m) vary from 132' (40.2m) at 18x zoom to 42' (12.8m) at 52x magnification.
The diopter adjustment feature offers visual correction for an optimal view, and the center wheel focus design simplifies focus adjustment. The multicoated high-definition lenses of the binoculars ensure sharp image reproduction. Exit pupil diameter varies from 4.4mm at 18x to 1.5m at 52x magnification.
BK 7 porro prism design
Variable magnification factors from 18x to 52x for extreme close-up observation
Linear fields-of-view (@1000 yard/914.4m) vary from 132' (40.2m) at 18x zoom to 42' (12.8m) at 52x magnification
Diopter adjustment feature offers visual correction for optimum viewing
Center wheel focus design simplifies focus adjustment
Multicoated high-definition lenses ensure sharp image reproduction
Exit pupil diameter varies from 4.4mm at 18x to 1.5mm at 52x magnification