The Pentax 65mm ED II spotting scope features a redesigned internal optical system that brings you even cripser images and a flat field at any magnification. Like the PF-80 ED and PF-100 ED, this ED spotting scope delivers outstanding resolution and dynamic viewing – basic to this line of time-proven Porro prism spotting scopesThese glass elements ensure a sharp, high-contrast image with minimal chromatic aberration. Even in the real world of dim light and shadowy thickets where birds and wildlife dwell, clear definition to your subject.