HIKVISION Box camera lens, 5MP Lens, 1/2.7inch, 2.7 ~ 12mm, CS mount Features: 2.7-12mm focal length Aperture range – F1.2 – C Format – 1/2.7″ 100g 48.5mm x 61.3mm Specifications: TV2712D-MPIR Lens Parameters Focal Length:  2.7-12mm Aperture Range:  F1.2 – C Lens Mount:  CS Format:  1/2.7″ Horizontal Angle of View:  1/3”: 97.2° ~ 24.3°1/4”: 72.1° ~ 18.4° Min.Working Distance:  0.1m Iris Control:  DC Weight:  <100g Dimension:  Φ48.5mm x 61.3mm