Celestron Nature DX 10x50 ED BinocularsCelestron Nature DX 10x50 ED Binoculars bring Extra low Dispersion glass to its lowest price point so far. The ability to reduce chromatic aberration at the $200 level is going to help nature viewers on a budget reduce eye strain as well as improving sharpness and contrast. Fully multi coated lenses and phase corrected BaK 4 prisms help complete the optical package. Field of view is 309' at 1000 yards, and close focus is 8. 2'. The waterproof and