Ex Demo Steiner Peregrine 10X42 Binoculars (003588exdemo)

Ex Demo Steiner Peregrine 10X42 Binoculars

Ex demo item, item has minor signs of use, used in store as demo item

Optically, Peregrines have a very high level of light transmission afforded by 44mm objective and 30mm ocular lenses. Further, those lenses are fully multi-coated, as are the roof prisms. As light enters any lens, some is reflected, reducing overall light transmission. Coatings help light “ease” through a lens with less reflection, and different coatings are needed for different light waves across the visible light spectrum. Loss occurs with each air-to-glass interface, so fully multi-coated lenses are better than “multi-coated” or “fully coated,” both of which sound good but may indicate lenses with less than optimum treatment. A simple comparison test between equal size/power binoculars you can do is to block off the ocular lens while looking into the objective lens. The binocular that reflects your image the least should transmit light better.