Prioritizing bokeh, the Canon
RF 85mm f/1.2L USM DS is a unique portrait-length prime, characterized
by its flattering focal length, exceptionally bright maximum aperture, and
advanced optical design. Differentiating itself from Canon's other RF 85mm
f/1.2 lens, this version features a DS (Defocus Smoothing) coating that helps
to soften and smooth the bokeh quality when working at wider aperture settings,
making it particularly suitable for shallow depth of field applications.
Beyond the bokeh-optimized design, the optical layout of
this lens incorporates a Blue Spectrum Refractive Optics element; a specially
developed element that helps to nearly eliminate chromatic aberrations and
color fringing for notable clarity and color accuracy. In addition to this, an
ultra-low dispersion element and one aspherical element are also featured to
further control various aberrations and distortion for great sharpness and
resolution. Individual elements also feature an Air Sphere Coating to suppress
flare and ghosting for high contrast and color fidelity when working in bright
and backlit conditions.
Complementing the imaging capabilities is an apt
ring-type Ultrasonic Motor, which delivers fast, near-silent autofocus and
full-time manual focus override. A unique Control Ring is also integrated into
the lens design for intuitive control over exposure settings from the lens
itself.
Portrait-length prime is designed
for full-frame Canon RF-mount mirrorless digital cameras.
Exceptionally bright f/1.2 maximum
aperture affords extensive control over depth of field for selective focus
applications and also benefits working in low-light situations.
Defocus Smoothing coating helps to
achieve an especially soft and smooth bokeh quality when working at wide
aperture positions. While this coating softens the look and feel of the
out-of-focus regions in an image, sharpness is still retained on the in-focus
portions for noticeable subject separation and an overall three-dimensional
quality. The effect is greatest when working at f/1.2, however the DS coating
requires approximately 1.3 stops more exposure than the standard version of the
lens when shooting wide open. By f/3.2, the two versions of the lens have
nearly identical light transmission and performance.
Blue Spectrum Refractive Optics
element virtually eliminates color fringing and chromatic aberrations by
refracting shorter wavelengths of the visible spectrum (blue light).
One aspherical element and one UD
element also help to control aberrations and distortions for sharper, clearer
image quality.
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.
Ring-type Ultrasonic Motor (USM),
along with optimized focusing algorithms, a high-speed CPU, and an internal
focusing design, is employed to deliver fast, precise, and quiet autofocus
performance as well as full-time manual focus override.
Configurable Control Ring can be
used to adjust a variety of exposure settings, including aperture, ISO, and
exposure compensation.
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 9-blade diaphragm
contributes to a pleasing bokeh quality.