A great bang-for-the-buck porro prism binocular, the Nikon 10x50 Action
is a big binocular with a knobby rubber armored housing. Its highly-refraction prisms feature a wide 6.5 degree field of view, and the 5mm diameter exit pupil is great for lots of lighting conditions. This is a large unit, but does have a tripod adapter threading for easy extended glassing from a stationary position
. The 10x50 Action is ideally suited to high powered lowlight observations and has performance in twilight that's commendable.