35mm film equivalent focal length (mm)
Angle of view (horzntl, vertl, diagnl) 22º 40', 15º 10', 27º
Lens construction (elements/groups) 11/9
No. of diaphragm blades 9
Closest focussing distance (m) 0.390
Maximum magnification (x) 0.50
Dust/moisture resistance -
Max. diameter x length (mm) 86.9 x 116.5
Magnification with Extension Tube EF12 II 0.64-0.15
Magnification with Extension Tube EF25 II 0.82-0.32
Extender Compatiblity Not Compatible
Optical Features/Specifications