Model No - Canon Wide Angle EF20mm f/2.8 USM Lenses

Specifications
Angle of View (Diagonal) : 94?
Angle of View (Horizontal) : 84?
Angle of View (Vertical) : 62?
Closest Focusing Distance (m, ft) : 0.25/0.8
Construction (groups elements) : 9-11
Diameter x Length (mm) (Maximum) : 77.5 x 70.6
Distance Scale : o
Drive System : Ring-type USM
Filter Size (mm) : 72
Maximum Magnification (x) : 0.14
Minimum Aperture : 22
No. of Diaphragm Blades : 5
Water or dust-resistance : -
Weight (g) (Approximately) : 405

With Extender EF1.4XII attached
AF : -
Focal length (mm) : -
IS : -
Maximum aperture (f) : -
Maximum magnification (x) : -

With Extender EF2XII attached
AF : -
Focal length (mm) : -
IS : -
Maximum aperture (f) : -
Maximum magnification (x) : -

Accessories
Extension Tube EF12 II : 0.72~0.60X
Extension Tube EF25 II : -
Gelatin Filter Holder III (Hood III) : NC
Gelatin Filter Holder IV (Hood IV) : 0
Lens Cap : E-72U
Lens Hood : EW-75 II
Lens Pouch or Case  : LP1214