When you see a binocular described as a 10×42 or an 8×30, the first number refers to the power or magnification. What does the second number refer to?
a) The weight of the binocular
b) The close-focus of the binocular.
c) The size of the front (objective) lens
d) The number of rotations of the focus wheel from close focus to infinity.
Page Sidebar Widgets
Tips for Easy Bird Identification
Identifying birds is at the very heart of bird watching. Each bird encountered is like a little puzzle or mystery to solve, because, while birds of a single species all share a certain set of physical traits, no two individual birds, like no two individual humans, are exactly alike.