Swarovski Riflescope Z3 4-12x50 BT, Magnification    4-12x Effective Objective Lens Diameter    50mm Exit Pupil Diameter    12.5-4.2mm Exit Pupil Distance (Eye relief)    90mm Field of View    9.7-3.3m / 100m Field of View    5.5-1.9 degrees Field of View, Apparent    22.7 degrees Dioptric Compensation    -2.5 to +2.5 Light Transmission    90% Twilight Factor acc. to ISO 14132-1    10.6-24.5 Impact Point Corr. Per Click    7mm / 100m Max. Elevation / Windage Adjustment Range    1.2m / 100m Objective Filter Thread    52x0.75