At a glance: For Geoma Series Scopes 11x with 52mm Geoma Scopes 15x with 67mm Geoma Scopes 19x with 82mm Geoma Scopes 44° AAoV with 67mm & 82mm Scopes 35° AAoV with 52mm Scope The fully multi-coated Vixen GL15 Eyepiece fits Geoma series 52mm, 67mm, and 82mm spotting scopes. Its moderate magnification (11x, 15x, and 19x, respectively) makes it an especially useful eyepiece for digiscoping. Magnification: 11x with 52mm scopes 15x with 67mm scopes 19x with 82mm scopes   Angle of View: 3.2° with 52mm scopes 2.9° with 67mm scopes 2.3° with 82mm scopes   Field of View: 56 m @ 1000 m with 52mm scopes 51 m @ 1000 m with 67mm scopes 40 m @ 1000 m with 82mm scopes   Exit Pupil Diameter: 4.7 mm with 52mm scopes 4.3 mm with 67mm scopes 4.0 mm with 82mm scopes   Content: Vixen Optics GL15 11x/15x/19x Spotting Scope Eyepiece