Celestron Regal ED 8x42 BinocularsCelestron Regal ED 8x42 Binoculars have a wealth of features for this price range. They have ED (Extra low Dispersion) objective lenses to provide a view with greatly reduced chromatic aberration and increased resolution and contrast. The BaK 4 roof prisms are both phase and dielectric coated for increased contrast and light transmission along with their fully multi coated lenses. The eyepieces of the Regal EDs employ field flattener technology,