SIGMA 15mm F1.4 DG DN Diagonal Fisheye L-mount

The world's first* F1.4 Full Frame diagonal fisheye interchangeable lens. Unrivaled resolving power that overturns preconceived ideas about fisheye lenses.

By developing a fisheye lens with an ultra-wide angle and powerful fisheye distortion, SIGMA has reached a whole new level of artistic potential, combining the world's first F1.4 aperture for consumer use with resolving power exceptional on the whole image. In terms of optical performance, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art has achieved excellent image rendering capability and high resolution by correcting various aberrations, especially sagittal coma flare. The lens is capable of meeting the needs of astrophotography, which demands high-quality performance even at wide apertures. Unlike conventional fisheyes, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is exceptionally sharp across its entire 180° angle of view and offers an ultra-bright F1.4 aperture, making it perfect for a wide range of shots, including astrophotography, landscapes and photography. 'architecture. The expressive power of this all-new Full Frame mirrorless lens opens up numerous creative possibilities in wide-angle photography.

* As an interchangeable lens for full-frame consumer cameras. (from February 2024 by SIGMA

A resolving power that overturns preconceived ideas about fisheye lenses
The latest generation optical construction completely corrects every type of aberration. This diagonal fisheye lens has the unique expressiveness of a fisheye lens and high resolution across the entire image from full aperture. Lens performance is guaranteed by a complete inspection with SIGMA's own MTF measurement system.

Even at full aperture, high resolution and image reproduction across the entire surface of the frame
The lens is composed of 21 elements in 15 groups, including 4 FLD low dispersion glass elements, 3 proprietary SLD low dispersion glass elements, and 2 aspherical elements. By correcting sagittal coma, flare and other aberrations, the lens can accurately reproduce bright spots across the entire image, even at wide aperture, making this lens ideal for astrophotography.

Diagonal fisheye lens with 180° viewing angle
The powerful distortion effect, which is the appeal of fisheye lenses, allows users to enjoy expressions such as a unique perspective and subject emphasis within a 180° viewing angle. For its part, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is designed to the strict performance standards of the Art line. Additionally, all lenses are checked using SIGMA's own MTF measurement system. The unique rendering power of this new fisheye lens, which combines an incredible 180° viewing angle with ultra-high resolution optical elements, offers a level of artistic potential that exceeds that of other fisheye lenses.

Designed to minimize flare and incident light
To avoid flare and incident lights, which reduce image quality, the lens is designed to handle all indirect light conditions based on latest generation simulation technology. High backlight resistance provides clear, sharp images regardless of lighting conditions.

A complement to the Art F1.4 range, meticulously designed for astrophotography
The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art offers many functions for astrophotography. With the introduction of this lens, SIGMA now has four Art line F1.4 wide angle lenses with features specifically designed for astrophotography, namely the 14mm, 20mm and 24mm. In terms of range and functionality, SIGMA fully meets the pleasure of photographing the stars.

A series of wide-angle Art lenses with F1.4 aperture specialized for astrophotography
With the addition of the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art, the SIGMA Art range of fixed focal length and F1.4 aperture lenses with specialized features for astrophotography extends to four lenses. Users can choose the lens that best suits their needs and the expression they are looking for.

MFL (Manual Focus Lock) Switch
The lens is equipped with an MFL switch. When the MFL switch is set to "LOCK", operation of the focus ring is disabled, ensuring that once focus is achieved, it will not be altered by unintentional movement of the focus ring. This feature is useful for long exposures and other situations where the focus must be fixed while shooting.

Holding device for lens heater.
A small stopper located at the front of the lens, called a lens heater retainer*, prevents the device from overhanging the front element, thus eliminating any risk of vignetting.

*A ribbon-shaped heating element that fits around the lens to prevent condensation from forming inside the lens when the temperature drops.

Rear filter holder
A standard rear filter holder located on the lens mount allows the use of gelatin filters.

Special front cap with locking mechanism and filter slots
The included lens cap has two slots for safely storing 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 gelatin filters without the risk of getting them confused or forgotten, while protecting them from scratches and dirt.

Foot collar
The lens is equipped with a lightweight and robust magnesium alloy tripod collar that is Arca-Swiss compatible. The removable tripod collar can be mounted on a tripod to ensure stable shooting conditions, even during long exposures. The shape has been deliberately designed to avoid any hindrance to the use of a lens heater.

*The TS-141 foot collar is also compatible with the SIGMA 14mm F1.4 DG DN | Art.

A multitude of recent functions and excellent manufacturing quality
The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is equipped with various shooting assist functions, including an AFL*1 button to which a chosen function can be assigned, an aperture ring, and uses an HLA (High-speed) linear motor. response Linear Actuator) as an AF motor to enable fast, silent and very precise AF shooting. The lens also features a dust- and splash-resistant structure*2 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. no matter what environment.

*1 Only on devices that support this feature. The extent of the correction varies depending on the device.

*2 The structure is designed to be dust and splash resistant, but not water resistant. Be careful not to put the lens in contact with a large amount of water. Water inside the lens can cause significant damage and even render the lens beyond repair.

Various shooting assist functions
The lens is equipped with an AFL button which can be assigned to a series of functions via the menu on the relevant 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 construction and water and oil repellent coating
In addition to a dust- and splash-resistant structure, the front lens element features a water- and oil-repellent coating, allowing photographers to shoot with peace of mind, even in harsh conditions. harsh outdoor environments.

An HLA linear motor for AF
The AF motor is an HLA (High-response Linear Actuator) linear motor. The high-thrust motor and advanced electronic control operate the focusing lens at high speed and with high precision to ensure the most comfortable AF shooting.

Excellent build quality
To strengthen the heavy optical system and improve robustness and reliability, metal parts are used in key parts of the lens. Additionally, lightweight TSC* engineering plastic is also used in appropriate locations to reduce weight. Likewise, each control element, such as rings and switches, is designed to be pleasant to the touch. SIGMA prides itself on the exceptional build quality of its products, which make no compromises on durability, operability and the feeling of ownership of a high-quality product.

TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminum. It has a great affinity with metal parts, which contributes to the production of high-quality products.