EF 24-105mm f/4L IS USM with Image Stabilizer.
Lightweight, dust and moisture resistant and incorporating Canons very finest
standards of precision optics, the EF 24-105mm f/4L IS USM is designed for
reportage, event, travel and celebrity photographers looking for a lightweight
and maneuverable lens with minimal image quality compromise.
Complementing the EF 17-40mm f/4L USM and EF 70-200mm f/4L USM, the lens
completes Canon???s f/4L-series zoom lens range. These lenses are designed for
professional photographers requiring a light zoom lens with a fixed aperture
throughout the zoom range. For outstanding camera shake reduction, Image
Stabilizer allows shutter speeds of 3 stops slower than would otherwise be
possible, with no perceptible increase in image blur.
The L-series is Canons flagship professional lens range, designed to include
outstanding image performance, ultimate operability and weather resistance. The
EF 24-105mm f/4L IS USM offers a lightweight alternative to the renowned EF
24-70mm f/2.8L USM.
Image Stabilizer (IS)
dramatically reduces image blur caused by camera shake. Gyro sensors detect
unwanted vibrations, triggering the corresponding movement of a correcting lens
group perpendicular to the optical axis. This alters the light path, returning
the image to its correct position on the sensor or film plane.
The 3 stop advantage means that photographers normally shooting a 105mm lens
handheld at 1/125 sec can obtain a shake free result with a shutter speed as low
as 1/15 sec, for vastly extended options in low light conditions.
The ring-type USM motor found in the EF 24-105mm f/4L IS USM employs ultra-sonic
frequency vibrations to drive auto focus with unrivalled speed and near-silent
operation. A powerful CPU and improved AF algorithm contribute to speed
performance. Good holding torque stops the lens with precision and accuracy, the
instant it arrives at the correct focus point and without overshoot.
Photographers can choose manual focus instantly and at any time simply by moving
the manual focus ring without first having to switch out of auto focus mode.
Constant f/4 aperture from 24 to 105mm
The EF 24-105mm f/4L IS USM offers the highest
possible optical quality with no change in aperture over the full focal range of
the lens. This allows photographers to set exposure at the widest aperture and
zoom all the way through to 105mm without having to vary the shutter speed. It
is the perfect lens for professional photographers looking for a lightweight and
extended zoom alternative to its EF 24-70mm f/2.8L USM counterpart. The lens
employs an almost perfectly circular barrel aperture, helping create attractive,
To limit lens size and improve image clarity over the total image area, an
Ultra-Low Dispersion glass (UD) element is used to eliminate the secondary
chromatic aberrations that otherwise reduce sharpness and introduce color
fringing. Aspherical lens elements correct spherical aberration for crisp, high
contrast corner-to-corner quality. By optimizing Super Spectra lens coatings and
lens element shaping, Canons engineers have been effective in suppressing flare
and ghosting more prone to occur with digital cameras due to reflection off the
image sensor. By increasing light absorption, coatings reduce reflections off
lens element surfaces to deliver crisp, undistorted images with natural color
EOS system integration
The EF 24-105mm f/4L IS USM includes distance metering information, providing
compatibility with the E-TTL II flash system of late model cameras such as the
EOS-1D Mark II N and EOS 5D. When used in conjunction with Canons range of EX
Speedlite flash units, the lens passes distance information to the flash
algorithm for markedly improved flash exposure metering. To match the weather
resistance afforded by EOS-1 professional camera bodies, an O-ring seals the
lens against the lens mount and numerous seals around the lens moving
components provide protection against the ingress of dust and moisture.
AF Mode and IS switches have been reshaped, making them less susceptible to
being engaged or disengaged accidentally. The EF 24-105mm f/4L IS USM comes with
a bayonet mount lens hood EW-83H and soft lens pouch LP1219. In keeping with
Canons Kyosei philosophy of living in harmony with the environment, the lens
features only lead-free glass.