1. TAMRON Machine Vision Lens f 25mm P N 20HA CCD size 2 3 Mount C mount Focal length 25mm Aperture range 1 6 16 Angle of View 2 3 20 0 x 15 0 horizontal x 1 2 14 6 x 11 0 vertical 1 3 11 0 x 8 2 Focusing range 0 21m infinity Operation Focus Manual Iris Manual Filter size M25 5 P 0 5mm Back focus in air 11 60mm Exit Pupil Position 19 59mm 1 Optical Principal Point 17 56mm 2 Optical Principal Point 13 41mm Distance between 1 amp 2 10 12mm Effective Front 16mm Diameter Rear 10 8mm Optical Construction 4 groups 4 elements Distortion 0 Overall Length 25 5mm INF Maximum Diameter 30 5mm Weight 37g Operating Temperature 10 45 C For High Quality Machine Vision 20HA N n Nv a N en N