Focus: Manual Iris: Manual Focal Length (mm): 75 Iris Range: F1.8 ~ F22 Back Focal Distance (in air) (mm): 24.43 Exit Pupil Position (From Image Plane) (mm): -52 Filter Thread (mm): M49 x 0.75 Mass (g): 295 Focusing Range (From Front Of The Lens) (m): ‡ ~ 0.9 *2 Angle Of View: 9‹45' x 7‹19' Object Dimensions at M.O.D.: 147 x 111