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Canon EF 100-400mm f 4.5-5.6 L IS USM

Optical Characteristics

With a 35mm equivalent focal length range of 160-640mm, this lens offers a High Powered Telephoto perspective.

Recommended Applications

*Recommendations are based only on the features necessary to perform the application successfully and do not take into account the relative image quality of different lenses

Wildlife Photography

Singling out individual animals requires 500-600mm telephotos. In telephoto, camera-shake is more problematic and stabilization is very important. Fast ultrasonic focusing is important in capturing fleeting moments.

Technologies

Fluorite and UD Lenses

Fluorite, which boasts a very low dispersion of light, is capable of combating the residual aberration that standard optical glass fails to eliminate. UD (Ultra Low Dispersion) lens elements incorporate low-dispersion optical glass which minimizes distortion and chromatic aberration.

Ultrasonic Motor (USM)

Canon's Ultrasonic Motor (USM) is a lens-based motor to harness ultrasonic oscillation energy. This technology makes focusing precise, virtually noiseless and incredibly quick – some lenses focusing literally faster than the human eye. The USM starts instantaneously and stops the moment focus is achieved, with no overshooting. What's more, the USM requires minimal battery power so you can shoot for longer on a single charge.

Image Stabilizer (IS)

Canon's Image Stabilizer (IS) technology uses a lens shift-type system to detect and correct slight camera shakes. Minute gyro sensors detect lens vibrations caused by hand shake and send a signal to a microcomputer, which controls an IS lens group that compensates movement along the horizontal and vertical axis of the camera. EF lenses with IS technology enable steady shooting at up to four stops lower than is possible with conventional lenses, making them ideal for situations where the use of flash is not permitted or desired.

Specifications

35mm equivalent focal length range: 160-640mm
Lens perspective: High Powered Telephoto
Minimum aperture: f32-f38
Image stabilisation: Lens Stabilisation
Ultrasonic motor: Yes
Special lens elements: 17 Elements in 14 Groups
Filter size: 77mm
Weight: 1,380g
Dimensions: 92 x 189mm
Maximum magnification: 0.20
Recommended applications: Wildlife Photography

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