Pentax Papilio II 8x5x21The compact and lightweight 8. 5x21 U Series Papilio II Binoculars combines aspherical optical elements and BAK4 Porro prisms to deliver edge to edge image sharpness with a 51 apparent angle of view. The optical elements are also fully multi coated to provide a high transmission of light. With a 8. 5x magnification and 21mm objectives, you obtain a notable magnification, insignificant image jitter due to unsteady hands, and a compact form factor. You