Description Additional Information Navitar Lens - 4/3" 50 mm, F2.0-22, C-Mount SPECIFICATIONS Filter Thread: M 37x0.5 Focal Length (mm): 50 F# Range: 2.0-22 Image Diagonal (mm): 23 Image Size at MOD (HxV): 100x75 Min Operating Distance: 0.3 Mount: C Weight (g): 235 F# 2.0-22 Focal Length 50 mm Format 4/3"