| Angle of view (horzntl, vertl, diagnl) | 74°, 53°, 84° | | Lens construction (elements/groups) | 11-9 | | No. of diaphragm blades | 7 | | Minimum aperture | 22 | | Closest focusing distance (m) | 0.25 | | Maximum magnification (x) | 0.16 | | AF actuator | USM¹ | | Filter diameter (mm) | 77 | | Max. diameter x length (mm) | 83.5 x 77.4 | | Weight (g) | 550 | | Magnification with Extension Tube EF12 | 0.66 - 0.50 | | Magnification with Extension Tube EF25 | - | | Lens hood | EW-83DII | | Hard case | - | | Soft case | LP1214 | | G.F.Holder III (hood III*) | NC | | G.F.Holder IV (hood IV*) | 0 |
Professional wide-angle lens with an ultra-large maximum aperture of f/1.4.This is the first EF lens to employ both a replicated aspherical lens element to suppress distortion and spherical aberration, and a UD lens element to correct lateral chromatic aberration. Thanks to the floating construction, excellent comer-to-corner delineation is attained from 25 cm to infinity.
• Lens construction: 11 elements in 9 groups
• Diagonal angle of view: 84°
• Focus adjustment: Rear focusing system with USM
• Closest focusing distance: 0.25m / 0.8ft
• Filter size: 77mm
|
