The pentax pf 80 eda angled spotting scope allows you to experience nature with maximum resolution without distortion or chromatic aberration an ed objective lens of 80 mm diameter lenses of lanthanum glass bak4 prisms and an smc multi layer coating of the lenses ensure an absolutely bright and clear image the sum of all these high end components is our contribution to this high end spotting scope by adding a high end digital slr with an adaptor you are ready for a photo safari the pentax