The redesigned optical structure of the lens features an improved 4-stop optical image stabilizer to reduce the effects of camera shake with long-distance shots. There are three IS modes tailored to suit typical shooting conditions, while Canon’s ring-type ultrasonic motor USM) provides fast, silent autofocusing.
The 21-element design includes a combination of fluorite and super ultra-low dispersion (Super UD) lens elements and, in a first for the EF lens range, Canon’s new Air Sphere Coating (ASC). The new advanced anti-reflection coating is constructed of tiny nano particles of trapped air, which create an ultra-low refractive index layer to help reduce visible ghosting and flare.
Following extensive feedback from Canon photographers, the lens features a number of design upgrades, including the traditional twist-action zoom mechanism in line with other EF zoom lenses. The new mechanism allows you to adjust zoom torque via a dedicated Zoom Touch Adjustment ring. This provides a smooth action for fast zooming, as well as the ability to lock the zoom at your desired focal length, preventing image composition from changing by accidentally touching the zoom.
Compact and lightweight for an advanced telephoto lens, the EF 100-400mm f4.5-5.6L IS II USM has been optimised to provide photographers with everything they need at their fingertips. The tripod collar is now built-in to provide smoother, seamless rotation and, when needed, the tripod foot can be removed, reducing the overall lens body size. A new dedicated lens hood, ET-83D, allows you to rotate polarising filters without removing the hood, thanks to the inclusion of a new access window.
Designed to be used anywhere, even in the harshest conditions, the lens continues the L-series lens rugged construction. You can rely on the lens to perform in vastly challenging environments, with a dust and water-resistant construction providing the durability users demand. For added endurance, the lens features fluorine coatings on the front and rear lens elements, reducing the possibility of dirt sticking to the lens surface and affecting image quality.
Angles-of-view (horizontal / vertical / diagonal): 20° to 5°10' / 14° to 3°30' / 24° to 6°10'
Elements / groups: 21 / 16
Number of diaphragm blades: 9
Minimum apertures: f32 to f38 (f40 if using 1/3 stop increments)
Closest focusing: 0.98 metres
Maximum magnification: 0.31x (at 400mm)
Distance information: Yes
Image stabiliser: 4-stops
AF actuator: Ring USM
Dust/misture resistance: Yes
Filter diameter: 77mm
Maximum diameter x length: 92 x 193mm
Weight: 1640g (with tripod mount)
Lens cap: E-77II
Lens hood: ET-83D
Lens case/pouch: LZ1326
Rear cap: Lens Dust Cap E
Magnification with Extension Tube EF12 II: 0.38 to 0.03x
Magnification with Extension Tube EF25 II: 0.46 to 0.03x
Specification with Extender EF 1.4x Mark III
Focal length: 140-560mm
Aperture range: f6.3 to f45 (f8 to f57 at 400mm)
Maximum magnification: 0.44x
Autofocus: possible with EOS-1D series, EOS 7D Mark II and EOS 5D Mark III (with firmware version 1.2.1)
Specification with Extender EF 2x Mark III
Focal length: 200-800mm
Aperture range: f9 to f64 (f11 to f81 at 400mm)
Maximum magnification: 0.64x
Autofocus: not possible
Pricing and availability
The EF 100-400mm f4.5-5.6L IS II USM will be available from December 2014 with an RRP of £1,999.99 / €2,499.99.