Leica Ultravid 10x50 HD Binocular The Ultravid HD 50 models provide excellent contrast and outstanding image brightness that other binoculars with larger front-lens diameters can hardly rival. Fluoride lenses ensure optimum clarity and resolving power. Thanks to their large objective lens diameter they are particularly suitable for use in twilight and the early hours of evening. + Excellent low-light performance + Impressive light-gathering power paired with relatively low weight + Weight advantage over binoculars with 56 mm objective lens diameters Anyone looking for the best in binoculars simply cannot ignore the Leica HD series. These premium binoculars are clear proof of what modern technology can achieve: fluoride lenses guarantee superb colour fidelity and perfect contrast, a uniquely bright and clear view and pin-sharp detail resolution. And this performance is further enhanced by efficient spurious-light suppression. The focusing action of Ultravid HD binoculars is perfectly smooth at all times. Fine focusing is always fast, precise and sure. The central hinge axis is machined from high-tensile titanium, while the body is manufactured from an ultra-lightweight magnesium alloy. Thanks to their rugged design and construction, Leica Ultravids make light work of almost all challenges encountered in outdoor use.