Constant F2.8 aperture across a versatile 28-105mm zoom
Many conventional zoom lenses which have a reach up to 105mm do not offer a constant F2.8
aperture, usually dropping to F4 at the long end. But the SIGMA 28-105mm F2.8 DG DN | Art
delivers the same impressive light-gathering and depth-of-field benefits across the whole focal
range. The lens offers all of this along with extremely high optical performance thanks to the
thorough suppression of optical aberrations within each lens group. And with its outstanding
close-focusing capability when zoomed in, macro-style results are also possible.
A versatile F2.8 aperture perfect for portraits and low light
With its fast aperture across the whole focal range, the SIGMA 28-105mm F2.8 DG DN |
Art is a true workhorse lens that can be used for almost any type of photography. Scenic
photographers can shoot wide-angle landscapes, using the F2.8 aperture for low-light
scenes and twilight urban views, while the middle focal lengths tackle dimly lit
documentary and street subjects, allowing shutter speeds one stop faster than
comparable lenses. At the long end, popular portrait focal lengths from 85mm and 105mm,
combined with the F2.8 maximum aperture, produce a shallow depth-of-field that will
isolate a subject impressively against large and beautiful bokeh.
Fill the frame with superb close-up performance
Achieving a minimum focus distance of just 40cm across its entire zoom range, the SIGMA
28-105mm F2.8 DG DN | Art can get you closer to your subject, filling the frame with
detail and texture. At its 105mm setting, this creates a very useful maximum
magnification ratio of 1:3.1 for powerful macro-style results.
Superior optical performance across the full zoom and focus range
The SIGMA 28-105mm F2.8 DG DN | Art operates without compromise, suppressing
aberrations very effectively within each lens group, and throughout the entire zoom and
focal range. This ensures the lens has a consistent performance even with such a long
zoom range. This is thanks to the lens’s premium optical design, which includes two FLD,
one SLD and five aspherical elements, the first grouping of which uses a large-diameter
f66.4mm element that is extremely difficult to produce and only available thanks to
SIGMA’s advanced manufacturing technology at its sole production base in Aizu, Japan.
Designed to minimize flare and ghosting
Using advanced simulation technology, flare and ghosting have been largely eliminated,
ensuring that the lens renders rich, high-contrast results in all conditions. In addition,
SIGMA’s Nano Porous Coating and Super Multi-Layer Coating have been applied to further
suppress flare and ghosting.
Minimal focus breathing
Vital for film-makers who demand consistent framing, the lens has been designed to keep
focus breathing to a minimum. This ensures that any changes to the angle-of-view due to
focus shift are minimized across the entire zoom range, ensuring natural-looking focus
pulls when recording video, and easier image alignment when focus stacking.
Superb portability thanks to a weight of less than 1kg
Standard zooms should be small and light enough for all-day hand-held shooting, so the SIGMA 28-
105mm F2.8 DG DN | Art has been designed with portability in mind. It combines five aspherical
elements effectively in place to shorten the overall length, and a magnesium-alloy construction
around the mount, keeping the weight of the lens to less than 1kg. This ensures the lens has
superb portability similar to shorter standard zoom lenses, while providing a wider zoom range.
Excellent optical performance in a streamlined body
By using five aspherical elements in its optical construction, SIGMA has succeeded in
significantly shortening the lens’s total length without any compromise to sharpness and
image quality. This advanced configuration was only made possible by continuous
technological innovation and cutting-edge manufacturing processes at SIGMA’s sole
production base in Aizu, Japan.
Smarter design means lower weight
Constant F2.8 zoom lenses can be heavy, but by optimising the design and materials of
each part of the SIGMA 28-105mm F2.8 DG DN | Art, SIGMA has achieved a remarkably
light weight of less than 1kg. The use of magnesium-alloy rather than aluminum for the
lens barrel around the mount has reduced the weight of these parts alone by two-thirds,
while ensuring rigidity.
Professional features, fast AF and excellent build quality
In addition to high-speed AF delivered by its linear motor HLA (High-response Linear Actuator),
the SIGMA 28-105mm F2.8 DG DN | Art packs in a range of features that help deliver the best
possible results in every shooting situation. These include a dust- and splash-resistant structure
and water- and oil-repellent coating, as well as a zoom lock switch, a de-clickable aperture ring,
AFL buttons and the focus ring for easier handling including shooting with MF.
A linear motor HLA for rapid and accurate AF
The lens incorporates a linear motor HLA (High-response Linear Actuator) that delivers a
maximum drive speed, ensuring responsive, precise and smooth AF. With its high level of
quietness, the motor also provides noise-free video capability.
An aperture ring for improved ergonomics
For quick changes to exposure, or a more traditional way of shooting, the lens is equipped
with a dedicated aperture ring, allowing the user to change aperture via the lens if
preferred. An aperture ring click switch is a useful tool for film-makers, and a lock switch
helps ensure the aperture ring is not knocked out of its setting accidentally.
Two AFL buttons* for added customization
Located on the side and on top of the barrel, two customizable AFL buttons can easily be
reached in either horizontal or vertical shooting positions, ensuring more ergonomic
handling.
* Assignment of functions is limited to supported cameras and assignable functions vary depending on the camera.
Zoom lock switch to keep the zoom ring secure
The lens is equipped with a zoom lock switch that holds the zoom mechanism in place at its
wide end, preventing it from extending unintentionally under its own weight when carried.
The lock can be released by the switch, or by turning the zoom ring for a faster and more
flexible workflow.
Weather-resistant structure for challenging conditions
The lens has a dust- and splash-resistant structure* that keeps it free of contaminants in
harsh outdoor environments. The front element also features a water- and oil-repellent
coating that helps keep it clean in adverse shooting conditions.
* The structure is designed to be dust- and splash-resistant, but not waterproof. Be careful not to bring the lens in contact with a
large amount of water. Water inside the lens may cause major damage and even render the lens unrepairable.
Petal-type hood
A dedicated petal-shaped hood is supplied. A locking mechanism is provided for secure
attachment.
Additional features
- Lens construction: 18 elements in 13 groups (2 FLD, 1 SLD, 5 aspherical elements)
- Inner focus system
- Compatible with high-speed autofocus
- HLA (High-response Linear Actuator)
- Compatible with Lens Aberration Correction
- Only cameras that are compatible with the function are allowed to use this function. Also, the items that can be corrected may vary depending on the camera, or automatic correction may be performed.
- On a camera that allows selecting ON/OFF for lens aberration correction, set the various aberration corrections to ON
- (AUTO) from the camera menu.
- Supports DMF and AF+MF
- Compatible with AF assist (for Sony E-mount only)
- Nano Porous Coating
- Super Multi-Layer Coating
- Water- and Oil-Repellent Coating (front element)
- Aperture ring
- Aperture ring click switch
- Aperture ring lock switch
- AFL button (2 locations)
- Assignment of functions is limited to supported cameras and assignable functions vary depending on the camera.
- Focus Mode switch
- Zoom Lock switch (Locks at wide end)
- Support for switching between linear and non-linear focus ring settings (for L-Mount
- only)
- Only cameras that are compatible with the system are allowed to use the system.
- Dust- and Splash-Resistant Structure
- The structure is designed to be dust- and splash-resistant, but not waterproof. Be careful not to bring the lens in
- contact with a large amount of water. Water inside the lens may cause major damage and even render the lens
- unrepairable.
- Petal-type hood with lock LH878-07
- Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
- Designed to minimize flare and ghosting
- Every single lens undergoes SIGMA’s proprietary MTF measuring system
- 12-blade rounded diaphragm
- High-precision, durable brass bayonet mount
- Mount Conversion Service available
- “Made in Aizu, Japan“ craftsmanship