Lens details
Maximum Diameter x Length (mm) 68.2 x 22.8
Filter Diameter (mm) 52
Angle of View 59º 10', 50º 35', 34º 55'
Magnification with Extension Tube EF25 II 1.38-1.11
Magnification with Extension Tube EF12 II 0.77-0.50
Minimum Aperture 22
Lens Construction (elements/groups) 6/5
Distance Information Yes
Magnification  0.27
Extender Compatibility Not compatible
Weight 125 g
AF Actuator  STM