Covering a versatile wide-angle
focal length range, the RF 15-35mm f/2.8L IS USM from Canon is
also characterized by its bright f/2.8 constant maximum aperture. This bright
design enables working in available light conditions and also affords greater
control over depth of field. The range of wide focal lengths suits working in a
variety of situations, from landscape to documentary shooting, and this zoom is
complemented by an advanced optical design that greatly reduces color fringing
and distortion for high clarity and sharpness. An Air-Sphere coating has also
been applied to reduce flare and ghosting for improved contrast and color
fidelity when working in bright conditions.
Complementing the imaging capabilities is an apt Nano USM focus system, which
delivers fast, nearly silent autofocus performance with full-time manual focus
override. An Image Stabilizer also compensates for up to five stops of camera
shake to help produce sharper handheld shots in difficult lighting conditions.
A unique Control Ring is also integrated into the lens design for intuitive
control over exposure settings from the lens itself. Additionally, this 15-35mm
is weather-sealed and has a fluorine coating to protect the front and rear
elements.
Wide-angle zoom lens is designed
for use with full-frame Canon RF-mount mirrorless cameras.
Constant f/2.8 maximum aperture
maintains consistent illumination throughout the zoom range and suits working
in available light conditions.
Two UD (Ultra-Low Dispersion)
elements help to minimize chromatic aberrations and color fringing in order to
provide greater clarity and color accuracy.
Three aspherical elements are used
to correct spherical aberrations and distortion for improved sharpness and
accurate rendering.
An Air-Sphere Coating (ASC) has
been applied to lens elements to reduce backlit flaring and ghosting for
maintained light transmission and high contrast in strong lighting conditions.
An Optical Image Stabilizer helps
to minimize the appearance of camera shake by five stops to better enable
working in low-light conditions and with slower shutter speeds.
Nano USM system utilizes both a
ring type USM and an STM mechanism to realize quick and accurate focusing that
is also smooth and nearly silent to suit both photography and video
applications. This focusing system also affords full-time manual focus control
when working in the one-shot AF mode.
Configurable Control Ring can be
used to adjust a variety of exposure settings, including aperture, ISO, and
exposure compensation.
Protective fluorine coating has
been applied to the front and rear element to resist fingerprints and smudges
and to make cleaning these elements significantly easier.
As a member of the esteemed
L-series, this lens has a weather-resistant design that protects against dust
and moisture to enable its use in inclement conditions.
Rounded nine-blade diaphragm
contributes to a pleasing bokeh quality.