The 35mm f/1.4 DG HSM Art Lens for Canon DSLR Cameras from Sigma
is the first entry into Sigma's Art series of professional lenses, with
an emphasis on artistic expression and the creative potential of the
lens. With a bright f/1.4 maximum aperture, floating inner focusing
system, and Hyper Sonic Motor (HSM) you'll have quick and accurate
control over the artistic effects achieved by the lens' high quality
elements.
For wide angle photography, this 35mm lens and its
circular 9-bladed f/1.4 aperture ensure excellent brightness and blurred
background (bokeh) effects. The Super Multi-Layer Coating reduces flare
and ghosting and provides sharp and high contrast images even in
backlit conditions.
The lens' Hyper Sonic Motor (HSM) and
floating inner focusing system ensure that you experience quick, quiet
and precise autofocusing whenever you need it. Adjust focus using either
autofocus (AF), or full-time manual focus, without having to switch
camera modes or change settings - just flick the switch from AF to MF.
For greater build quality and strength, all metallic parts and the new
Thermally Stable Composite compound material (TSC), are housed
internally. Its brass made bayonet mount has both high accuracy and
durability, and a special treatment is applied to its surface giving it
greater strength and making it highly resistant to long-term daily use.
Aperture Range: f/1.4-16
With a bright maximum aperture of f/1.4 this lens allows you
to capture images with beautiful defocused background bokeh effects in
darker conditions - using faster shutter speeds and lower ISO
sensitivities.
Hyper Sonic Motor (HSM)
This lens' motor is driven by ultrasonic waves to provide
quiet, high speed autofocus. This Hyper Sonic Motor (HSM) ensures high
speed and quiet AF as well as full-time manual focus override by
rotating the focus ring.
Floating Internal Focus System
For stable focusing, this lens moves its inner lens groups
without changing the lens length. It also compensates for astigmatic
aberration and provides extremely high optical performance for close-up
photos.
Minimum Focusing Distance: 11.8"
This lens has a minimum focusing distance of 11.8" so you can capture wide-angle close-ups from nearly a foot away.
Anti-Flare Super Multi-Layer Coating
This lens' coatings reduce lens flare, internal reflections
and light scattering that can occur between the surfaces of its glass
elements.
USB Dock & SIGMA Optimization Pro Software
Because of its redesigned series of lenses, Sigma developed
proprietary software (SIGMA Optimization Pro) and an optional USB
docking system that allows you to update the lens' firmware and adjust
its parameters such as focus. The 35mm f/1.4 DG HSM A1 Lens is
compatible with the USB Dock.
Special & "F" Low Dispersion Elements
This lens incorporates "F" Low Dispersion (FLD) glass
elements, which have performance equal to that of fluorite, and Special
Low Dispersion (SLD) glass elements. By optimizing the power alignment
of the lens, chromatic aberration has been corrected, achieving high
image quality through the entire focusing range.
DG Lens for Digital & 35mm Film SLRs
This is a large-aperture lens with wide angles and a short
minimum focusing distance. Because of its great peripheral illumination,
or lack of vignetting, it is an ideal lens for DSLR Cameras and
traditional 35mm SLRs alike.
Sigma's Artistic A-Series Lens
Sigma has organized all of its interchangeable lenses into
three product lines: Contemporary, Art and Sports. The Art line delivers
high-level artistic quality with a focus on sophisticated optical
performance and abundant expressive power. The SIGMA 35mm f/1.4 DG HSM
is the first lens from the Art line. Developed with an emphasis on
artistic touch, Sigma's Art line lenses are designed to meet the
expectations of users who value a creative, dramatic outcome above
compactness and multifunction.
Front Filter Thread Diameter: 67mm
The 67mm front filter thread is fixed, allowing rotating polarizing filters to be used with the lens.
9x Circular Aperture Blades
With nine circular blades, the lens' diaphragm delivers very pleasant, soft bokeh background effects.
Brass Bayonet Mount
This lens incorporates a brass made bayonet mount which has
both high accuracy and durability. A special treatment to reinforce it
is applied to the surface, giving it greater strength and making it
highly durable for long-term use.
Ease Of Use
For better usability, the designs of the lens cap and AF/MF
switch have been improved, as well as the rubberized lens hood
attachment. In order to ensure accuracy and precision, all metallic
parts and the new Thermally Stable Composite material are housed
internally.
Quality Control & Sigma's MTF "A1" Measuring System
Sigma used to measure lens performance with the standard MTF
(modulation transfer function) measuring system, using conventional
sensors. However, they have since developed a proprietary MTF measuring
system - dubbed "A1" - using 46MP resolution Foveon direct image
sensors. Previously undetectable high-frequency details are now within
the scope of their quality control inspections.