Kowa TE-80XW 40x/35x Extreme Wide Angle EyepieceThe Kowa TE 80XW 40x 35x Extreme Wide Angle Eyepiece provides an 80 apparent field of view which corresponds to fixed 40x on the TSN 99 scope bodies and 35x on the TSN 880 and TSN 770 scope bodies. This eyepiece contains both an XD element and a field flattener element for virtually no chromatic aberration and edge to edge sharpness. The field of view with the TSN 99 scopes is 37m at 1000m (111' at 1000 yds.) and 45m at 1000m (135' at 1000 yds.) on