The Swarovski Z3 4-12x50 Rifle Scope, this is the big one: objective lens with 50 mm diameter, 12x magnification and optional ballistic turret are the special features of the Z3 4-12x50, which is great for poor light conditions and longer distances.
the all aluminum outer parts are anodized to be scratch-resistant.
The field of view is crisp, wide, and rich with detail.
Objective lens (mm): 50
Exit pupil (mm): 12.5-4.2
Exit pupil distance (mm): 90 / 3.54
Field of view at m/100 m / ft/100 yds: 9.7-3.3 / 29.1-9.9
Field of view (degrees): 5.5-1.9
Subjective field of view, apparent (degrees): 22.7
Dioptric compensation (dpt): ±2.5
Transmission (%): >90
Impact point cord. per click (mm/100 m / in/100 yds): 7 / 0.25