Focal Length & Maximum Aperture : 17mm 1:4
Minimum Aperture : f/22
Lens Construction : 18 elements in 12 groups
Diagonal Angle of View : 104° (without tilt or shift)
Image circle diameter : 67.2mm
Focus Adjustment : Manual focus, rear focusing system with focusing cam (with floating system)
Closest Focusing Distance : 0.82 ft./0.25m (maximum close-up magnification: 0.14x)
Aperture Control : EMD with 8 blade iris diaphragm, circular aperture
Max. Diameter x Length, Weight : 3.5 x 4.2 in./88.9 x 106.7mm (maximum lens length), 28.9 oz./820g
Zoom Type : Fixed Lens