The best price for Leica Trinovid 10x42 HD is $1,747.05. This is presently the cheapest offer found from comparing prices from 2 shops in Australia. The excellent average rating is 5.0 out of 5 from 6 reviews.
The larger the diameter, the more light is captured. A diameter of 30 mm suffices during day-light conditions, but larger lenses are required during low-light conditions.