ART
15mm F1.4 DG DN DIAGONAL FISHEYE

• Camera Type

  Mirrorless

• Corresponding Mount

  L-Mount, Sony E-mount

• Sensor Format

  Full-frame [DG]

• Lens Construction

  21 elements in 15 groups

• Angle of View

  180°

• Number of Diaphragm Blades

  11

• Minimum Aperture

  F16

• Minimum Focusing Distance

  38.5cm / 15.2in.

• Maximum Magnification Ratio

  1:16

• Filter Size

  -

• Dimensions (Diameter × Length)

  L-Mount：φ104.0mm x 157.9mm / φ4.1in. x 6.2in.

  Sony E-mount：φ104.0mm x 159.9mm / φ4.1in. x 6.3in.

  * The length of a lens is measured from the filter surface to its mount.

• Weight

  L-Mount：1,360g / 48.0oz.

  Sony E-mount：1,360g / 48.0oz.

• 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
  ・COVER LENS CAP LC1040-01
  ・REAR CAP LCR II
  ・TRIPOD SOCKET TS-141
  ・PROTECTIVE COVER PT-51
  ・GUIDE PLATE GP-21
  ・SHOULDER STRAP

• Mount / Product Barcode

  L-Mount：00-85126-47869-8

  Sony E-mount：00-85126-47865-0

• Camera Compatibility

  LINK

• * 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.
  * L-Mount is a registered trademark of Leica Camera AG.

• Resolving power that overturns the conventional wisdom about fisheye lenses

  The latest optical design thoroughly corrects each type of aberration. This diagonal fisheye lens has the unique expressiveness of a fisheye lens and high resolution throughout the entire image from a wide-open aperture. The performance of the lens is guaranteed by a full inspection with Sigma's proprietary MTF measuring system.

• Even wide-open, high resolution and point image reproducibility across the entire image

  The lens consists of 21 elements in 15 groups, including 4 FLD and 3 SLD exclusive low-dispersion glass elements, and 2 aspherical lens elements. By correcting sagittal coma flare and other aberrations, the lens can precisely reproduce bright points of light across the whole frame even wide open, making it ideal for astrophotography.

  

• Diagonal fisheye lens with 180° angle of view

  The powerful distortion effect, which is the appeal of fisheye lenses, allows users to enjoy expressions such as a unique perspective and emphasis on the subject at a 180° angle of view. In addition, the Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is designed with the strict performance standards of the Art line. Furthermore, all lenses are inspected with Sigma's proprietary MTF measuring system. The unique descriptive power of this new fisheye lens, which combines an incredible 180° angle-of-view with very high resolution optics, delivers a level of artistic potential that exceeds other fisheye lenses.

  

• Designed to minimize flare and ghosting

  To prevent flare and ghosting, which reduce image quality, the lens is designed to handle all conditions of incident light based on state-of-the-art simulation technology. High backlight resistance enables clear and sharp images under any lighting conditions.

• An addition to the Art F1.4 lineup, meticulously crafted for astrophotography

  The Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art offers an abundant functions to support astrophotography. With the introduction of this lens, Sigma now has four F1.4 wide-angle prime Art line lenses with functions specifically designed for astrophotography, including the 14mm, 20mm, and 24mm. In terms of both lineup and functionality, Sigma fully supports the joy of capturing the stars.

• Art F1.4 prime wide-angle lens series specialized for astrophotography

  The Sigma Art line of F1.4 single focal length lenses with specialized features for astrophotography is expanded to four lenses with the addition of the Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art. Users can select the lens that best suits their needs and the expression they are aiming for.

  

  ART
  15mm F1.4 DG DN DIAGONAL FISHEYE

  

  ART
  14mm F1.4 DG DN

  

  ART
  20mm F1.4 DG DN

  

  ART
  24mm F1.4 DG DN

• MFL (Manual Focus Lock) switch

  The lens is equipped with an MFL switch. When the MFL switch is set to “LOCK,” the focus ring operation is disabled, ensuring that once focus is acquired, it will not be changed by unintentional movement of the ring. This is useful for long exposures and other situations where the focus should be fixed while shooting.

  

• Lens heater retainer

  A small step at the front of the lens called a lens heater retainer prevents the lens heater* from protruding over the front element, eliminating the risk of vignetting.

  ^{*A belt-shaped heat strip that is wrapped around the lens to prevent condensation from forming inside the lens when the temperature drops.}

  

• Rear filter holder

  A standard-equipped rear filter holder at the lens mount allows sheet-type filters to be used.

  

• Special cover lens cap

  The included cover lens cap features two slots to securely store rear filters, as well as a locking mechanism. The cap is specially designed for the Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art, allowing users to carry sheet-type filters without the risk of confusing or forgetting them, while protecting them from scratches and dirt.

• Tripod Socket

  The lens is equipped with an Arca-Swiss compatible, lightweight and sturdy magnesium alloy tripod socket. The detachable leg can be mounted on a tripod for stable conditions even during long exposures. The shape has been deliberately designed to prevent interference when using a lens heater.

  ^{*The tripod socket TS-141 is also compatible with the Sigma 14mm F1.4 DG DN | Art.}

  

• A wealth of latest functions and excellent build quality

  The Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is equipped with various functions to assist shooting, including an AFL button to which preferred function can be assigned and an aperture ring, and uses a linear motor HLA (High-response Linear Actuator) as the AF actuator to enable fast, quiet, and highly accurate AF shooting. The lens is also equipped with a dust and splash resistant structure to ensure a high level of weather resistance and robustness, as well as excellent build quality that allows for long and reliable use in any environment.

  

• Various shooting assist functions

  The lens is equipped with an AFL button which can be assigned to a range of functions via the menu on selected cameras. In addition to the aperture ring, the lens is equipped with an aperture ring lock switch and a click switch to turn the click on and off.

  

• Dust and splash resistant structure and water and oil repellent coating

  In addition to a dust and splash resistant structure, the front element of the lens features a water and oil repellent coating, allowing photographers to shoot without concerns even in harsh outdoor environments.

  

• Adopts a linear motor HLA

  The AF actuator is a linear motor HLA (High-response Linear Actuator). The high thrust motor operates the focus lens at high speed and with high precision to provide comfortable AF shooting.

• Excellent build quality

  To support the heavy optical system and enhance robustness and reliability, metal parts are used in key parts of the lens body. Meanwhile, the lightweight engineering plastic TSC* is also used in appropriate places to reduce weight. Furthermore, each control part, such as rings and switches, is designed to feel good. Sigma is proud of the exceptional build quality of its products, which do not compromise on durability, operability, and a satisfying sense of ownership.

  ^{* TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminum. It has a high affinity to metal parts which contributes to high quality product manufacturing.}

Lens construction

FLD glass

SLD glass

Aspherical lens

• Spatial frequency

  S:Sagittal Line

  M:Meridional Line

• 10lp/mm

• 30lp/mm

Diffraction MTF

Geometrical MTF

• Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical lens)

• Compatible with high-speed autofocus

• Supports DMF and AF+MF

• Compatible with AF assist (for Sony E-mount only)

• TRIPOD SOCKET TS-141

• PROTECTIVE COVER PT-51

• Special COVER LENS CAP LC1040-01 with a locking mechanism and filter slots

• 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

• 11-blade rounded diaphragm

• High-precision, durable brass bayonet mount

• Mount Conversion Service available

• “Made in Aizu, Japan” craftsmanship