Even after 25 years my 10x42 Swaro EL's still impress me EVERY time I use em. I have been a L O N G T I M E serious hobby photographer and have quite a few high end lenses (Zeiss, SonyG, Minolta, Hasselblad) and those binos NEVER cease to amaze me. Their lens coatings are beyond reproach, contrast and detail is superb across the entire field of view. Chromatic aberration is almost non-existent!!!