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What is an Aspherical Element?
An aspherical element is a free-curved internal component within your lens that corrects the distortion caused by the curvature of the spherical lens elements.
These components are only found in professional quality lenses.
Aspherical aberration produced with a standard lens can be avoided by using a higher quality lens with additional aspherical elements.
The EF 24-70 f/2.8L II USM has three aspherical elements to separately counteract each of the individual internal aberrations, so your images are exceptionally sharp.
OPTICAL FEATURES/SPECIFICATIONS
Angle of view (horzntl, vertl, diagnl)
74° - 29°. 53° - 19°30', 84° - 34°
Lens construction (elements/groups)
18/13
No. of diaphragm blades
9
Minimum aperture
22
Closest focussing distance (m)
0.38(Macro)
Maximum magnification (x)
0.21(at 70mm)
Distance Information
Provided
AF actuator
Ring USM¹
PHYSICAL SPECIFICATIONS
Dust/moisture resistance
Yes¹
Filter diameter (mm)
82
Max. diameter x length (mm)
88.5 x 113
Weight (g)
805
ACCESSORIES
Lens Cap
E-82U / E-82II
Lens hood
EW-88C
Lens case/pouch
LP1219
Magnification Extension Tube EF12 II
0.63-0.18
Magnification Extension Tube EF25 II
0.74-0.41 5
Extender Compatiblity
Not compatible
Footnotes
AF actuator - ¹ Full time Manual focus
Dust/moisture resistance - ¹ Lenses with dust/moisture resistance are fitted with a rubber ring on the lens mount which may cause sligth abrasion of the camera mount. This in no way effects either the lens or camera performance.
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