The Nikon EDG Fieldscope series of spotting scopes and lenses provides edge-to-edge brilliance and overall leading performance. The optical and mechanical results of the Nikon Fieldscope series, which has won plaudits from users around the world, have been enhanced for the Nikon EDG Fieldscope series. The outstanding performance of Nikon EDG Field Scopes, including natural color reproduction and crisp clarity, has been achieved through the use of Extra-low Dispersion (ED) glass. This is some seriously clear glass. You'll have no problems getting a great view in almost any conditions. The straight-type models also feature dielectric high-reflective multilayer prism coating. These Nikon spotting scopes feature phase corrected roof prisms for high resolution.
Both the main bodies and eyepieces of the Nikon EDG Fieldscopes are waterproofed with O-ring seals and nitrogen gas, allowing them to be used in adverse weather conditions. Seven kinds of eyepiece are available, providing unparalleled performance in differing environments. The zoom eyepiece in particular offers superb optical performance with minimized distortion and long eye relief (18.4-16.5mm). And finally, the Nikon Field Scope EDG series is wrapped in a stylish design that looks great anywhere.