Barrel Diameter

•  0.965" (1)
•  1.25" (8)
•  2" (3)

Apparent Field of View

• Std (Plossl, Kelner) (3)
• Wide Angle (9)

Focal Length

•  4 mm (1)
•  6 mm (2)
•  8 mm (2)
•  9 mm (2)
•  10 mm (3)
•  13 mm (4)
•  14 mm (1)
•  14mm (1)
•  15 mm (1)
•  17 mm (4)
•  19 mm (1)
•  20 mm (2)
•  25 mm (7)
•  31 mm (1)
•  31.5 (1)
•  32 mm (1)