Vortex Optics Viper HD Roof Prism Binoculars 10x42

Good glass at half the price of the “big names”

I bought these binoculars to replace a pair of Nikon Monarch 7, which I had lost and used them to whilst on a two week birding holiday in the Pyrenees. The image clarity was between 10%-20% less on Viper binoculars (in a range of lighting conditions) in comparison to my old Nikons. Often I had to get within 20m or birds in order be sure of a correct identification.