本文へ移動

ART
28-45mm F1.8 DG DN

Available mounts

  • L-Mount
  • Sony E-mount
Find a dealer
  • The world's first full-frame, F1.8 maximum aperture zoom lens
  • Excellent optical performance comparable to that of a prime lens
  • High-speed AF speed and innovative features

  • Camera Type

    Mirrorless

  • Corresponding Mount

    L-Mount,Sony E-mount

  • Sensor Format

    Full-frame [DG]

  • Lens Construction

    18 elements in 15 groups (5 SLD, 3 aspherical elements)

  • Angle of View

    75.4-51.3°

  • Number of Diaphragm Blades

    11 (rounded diaphragm)

  • Minimum Aperture

    F16

  • Minimum Focusing Distance

    30cm / 11.9in.

  • Maximum Magnification Ratio

    1:4 at f=45mm

  • Filter Size

    φ82mm

  • Dimensions (Diameter × Length)

    L-Mount：φ87.8mm x 151.4mm / φ3.5in. x 6.0in.
    Sony E-mount：φ87.8mm x 153.4mm / φ3.5in. x 6.0in.

  • Weight

    L-Mount：960g / 33.9oz.
    Sony E-mount：950g / 33.5oz.

  • Edition Number

    A024

    The three-digit code on the surface of the lens is to indicate the year the lens was first released.
    (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)

  • Supplied Accessories

    CASE
    LENS HOOD LH878-06
    FRONT CAP LCF-82 III
    REAR CAP LCR II

  • Mount / Product Barcode

    L-Mount：00-85126-61269-6
    Sony E-mount：00-85126-61265-8

  • * L-Mount is a registered trademark of Leica Camera AG.
    * This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.

  • The world's first* full-frame, F1.8 maximum aperture zoom lens

    Sigma has successfully developed the world's first full-frame zoom lens with a maximum aperture of F1.8. The Sigma 28-45mm F1.8 DG DN | Art incorporates an inner zoom mechanism, a minimum focusing distance of 30cm across the entire zoom range, and a filter size of φ82mm. Despite its advanced feature-set, the lens weighs less than 1kg, making it a portable and versatile option for either hand-held shooting or a gimbal setup.

    * As of June 2024 by Sigma

  • Constant maximum aperture of F1.8

    Once a privilege reserved only for prime lenses, the maximum F1.8 aperture allows full-frame camera users to expose hand-held in low light and produce beautiful bokeh, while enjoying the flexibility of a zoom. This unique optical achievement has been created through Sigma's accumulated optical design experience and advanced production technology at the company’s sole production base in Aizu, Japan.

  • Practical and stable inner zoom

    Employing an inner zoom mechanism, the overall length of the lens remains constant when the focal length or focus distance changes. This means the lens is easy to use when shooting hand-held, highly stable when mounted on a tripod or gimbal, and more resistant to dust and water contamination.

  • Consistent close focus

    The minimum focusing distance is a constant 30cm across the entire zoom range, with a maximum magnification ratio of 1:4 at the telephoto end, providing excellent close-up shooting capabilities. As well as offering precise focus in confined spaces, the lens can therefore be used close to a subject without affecting sharpness when using the zoom.

  • Premium build at a lighter weight

    By rights, such a fast zoom should be big and heavy, but while the lens’s rigidity and durability protect its sophisticated optical design, this is achieved at a weight of less than 1kg. What’s more, this reliable photographic tool uses a versatile filter size of φ82mm, meaning no compromise in portability or convenience.

  • Excellent optical performance comparable to that of a prime lens

    With each optical aberration meticulously corrected throughout the zoom range, the Sigma 28-45mm F1.8 DG DN | Art rivals prime lenses for clarity and definition. Thanks to its advanced coatings, the lens produces clear images, even in backlit environments, while focus breathing is thoroughly suppressed, bringing expressive power to film-makers and photographers.

  • The pinnacle of optical quality in a zoom

    Through the effective arrangement of 5 SLD elements and 3 aspherical elements, aberrations are rigorously corrected. Axial chromatic aberration, which is particularly noticeable with large-aperture lenses, has been thoroughly suppressed, and the lens delivers clear images with minimal coloration, from sharply focused details to large, smooth bokeh.

  • Suppression of focus breathing

    When using regular lenses, the angle-of-view can change as focus moves from near to far, affecting precise composition. With the Sigma 28-45mm F1.8 DG DN | Art this focus breathing is suppressed, enabling natural focus pulls when shooting video.

  • Minimal flare and ghosting

    Flare and ghosting, which reduce image quality, have been largely eliminated using advanced simulation technology, ensuring the lens renders rich, high-contrast results in all conditions. In addition, in order to keep flare and ghosting to a minimum, the lens uses Sigma’s Nano Porous Coating and Super Multi-Layer Coating, producing superior resistance to backlighting and enabling clear, saturated images in all lighting conditions.

  • High-speed AF speed and innovative features

    The Sigma 28-45mm F1.8 DG DN | Art delivers a range of professional features as impressive as its outstanding optical performance. With high-speed and adaptable AF, a durable weather-resistant structure, a de-clickable aperture ring, smooth manual focusing and on-barrel AFL buttons, all features combine to create a versatile photographic tool capable of responding to any situation.

  • Faster focus with a linear motor

    The lens’s AF mechanism uses an HLA (High-response Linear Actuator) to combine accelerated focusing speed with exquisite precision. And because the motor is near-silent it allows video recording without noise.

  • Precise and comfortable manual focusing

    To deliver delicate and accurate manual focus, the lens employs a by-wire driven focus ring with optimum torque setting, high resolution and an adjustable rotation angle between 90° and 720°*. This allows film-makers to pull focus with organic smoothness, and photographers to focus manually with outstanding accuracy.

    * Only for L-Mount, and with compatible cameras.

  • Aperture ring refinements

    The lens is equipped with an aperture ring as well as an aperture ring click switch and an aperture ring lock switch, allowing for aperture operation suitable for various shooting situations.

  • Equipped with two AFL buttons

    Located on the side and on top of the barrel, two customizable* AFL buttons can be easily reached in either horizontal or vertical shooting positions.

    * Assignment of functions is limited to supported cameras and assignable functions vary depending on the camera.

  • Built to withstand the elements

    In addition to a dust- and splash-resistant body*, the frontmost surface of the lens is coated with a water- and oil-repellent coating so that it can be used safely even in harsh outdoor environments.

    * The product is designed to be dust- and splash-resistant but is not waterproof. When using the lens near water, etc., take care not to allow large amounts of water to splash on it. If water gets inside the lens, it may cause a major malfunction and render the lens unrepairable.

  • Includes locking petal-type hood

    A petal-type hood is included to shield the lens from light. It has a locking mechanism for secure attachment and can be reversed for easier storage.

  • Lens construction

    SLD glass

    Aspherical lens

  • MTF CHART

    Diffraction MTF

    Diffraction MTF

    Geometrical MTF

    Geometrical MTF

    • Spatial frequency

      S:Sagittal Line

      M:Meridional Line

    • 10lp/mm

    • 30lp/mm

  • Compatible with high-speed autofocus
  • Supports DMF and AF+MF
  • Compatible with AF assist (for Sony E-mount only)
  • Petal-type hood with lock LH878-06
  • 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
  • High-precision, durable brass bayonet mount
  • Mount Conversion Service available
  • “Made in Aizu, Japan” craftsmanship

    • Camera

      SIGMA fp L

    • Shutter Speed

      1/125s

    • Lens F Number

      F2.2

    • ISO

      100

    • Focal Length

      44.6mm

    • Photographer

      Aya Iwasaki

    Download

    • Camera

      SIGMA fp L

    • Shutter Speed

      1/1000s

    • Lens F Number

      F1.8

    • ISO

      100

    • Focal Length

      45mm

    • Photographer

      Aya Iwasaki

    Download

    • Camera

      SIGMA fp L

    • Shutter Speed

      1/8000s

    • Lens F Number

      F2

    • ISO

      100

    • Focal Length

      37mm

    • Photographer

      Aya Iwasaki

    Download

    • Camera

      Sony α7 IV

    • Shutter Speed

      1/500s

    • Lens F Number

      F6.3

    • ISO

      64

    • Focal Length

      33.2mm

    • Photographer

      Masami Tanaka

    Download

    • Camera

      Sony α7 IV

    • Shutter Speed

      1/100s

    • Lens F Number

      F2.8

    • ISO

      160

    • Focal Length

      45mm

    • Photographer

      Masami Tanaka

    Download

    • Camera

      Sony α7 IV

    • Shutter Speed

      1/500s

    • Lens F Number

      F3.2

    • ISO

      100

    • Focal Length

      40.8mm

    • Photographer

      Masami Tanaka

    Download

    • Camera

      Sony α7 IV

    • Shutter Speed

      1/1250s

    • Lens F Number

      F1.8

    • ISO

      100

    • Focal Length

      45mm

    • Photographer

      Masami Tanaka

    Download

    • Camera

      Sony α7 IV

    • Shutter Speed

      1/640s

    • Lens F Number

      F1.8

    • ISO

      100

    • Focal Length

      45mm

    • Photographer

      Masami Tanaka

    Download

    • Camera

      LEICA SL3

    • Shutter Speed

      1/25s

    • Lens F Number

      F2.8

    • ISO

      200

    • Focal Length

      28mm

    • Photographer

      Jim Koepnick

    Download

    • Camera

      LEICA SL3

    • Shutter Speed

      1/80s

    • Lens F Number

      F2.8

    • ISO

      2500

    • Focal Length

      45mm

    • Photographer

      Jim Koepnick

    Download

    • Camera

      LEICA SL3

    • Shutter Speed

      1/200s

    • Lens F Number

      F1.8

    • ISO

      100

    • Focal Length

      45mm

    • Photographer

      Jim Koepnick

    Download

    • Camera

      Sony α7R IV

    • Shutter Speed

      1/60s

    • Lens F Number

      F2.2

    • ISO

      4000

    • Focal Length

      28mm

    • Photographer

      Anabel DFlux

    Download

The world's first* F1.8 full-frame mirrorless zoom

The Sigma 28-45mm F1.8 DG DN | Art is the world's first full-frame zoom lens with a constant maximum aperture of F1.8, delivering sharpness and clarity comparable to that of a prime lens.

Already the pioneer of unique, large-aperture zoom lenses including the Sigma 18-35mm F1.8 DC HSM | Art and the Sigma 24-35mm F2 DG HSM | Art, Sigma introduces another fast, portable and versatile tool to its Art lineup.

In addition to its unprecedented brightness, the Sigma 28-45mm F1.8 DG DN | Art delivers sharpness and clarity comparable to that of a prime lens throughout its entire zoom range. Also equipped with fast and precise AF and superior operability, this innovative optic turns a new page in the history of zoom lenses and their creative possibilities. It is a lens that will inspire full-frame film-makers, while bringing unparalleled versatility to stills photographers.

* As of June 2024 by Sigma

About three Lens Lines

IMPRESSIONS

SUPPLIED ACCESSORIES

SEPARATELY SOLD ACCESSORIES