The Duovids with 50mm lens diameter and optional 10x or 15x magnification close the gap between binoculars and a spotting scope.
Are you entirely sane, you wonder?
You're freezing. For the last two hours you've been sitting in a black maelstrom of biting gale and icy, horizontal sleet. But at last...there they are. Long, low, shapes slipping out of the dark water. Your Duovids track them to their hideaway. Despite your wet gloves and clumsy-cold fingers you click your Duovids easily from their light-grabbing, large field setting to close detail mode. And sit back to wait.
Will this be the day the otters bring out their cubs?
The LEICA DUOVID 8+12x42 and the 10+15x50 are the only high-performance binoculars offering two separate magnifications.