Released in March 2024. *Images are for illustrative purposes only. Overwhelming resolution that defies conventional wisdom about fisheye lenses. 35mm full-frame compatible F1.4 diagonal fisheye lens. Mount: Leica Camera L-Mount standard. Focal length: 15mm. Maximum aperture: F1.4. Filter diameter: 35mm. Art line / [1514DGDNTL] 1514DGDNTL Released in March 2024. Overwhelming resolution that defies conventional wisdom about fisheye lenses! 35mm full-frame compatible F1.4 diagonal fisheye lens. In developing a fisheye lens characterized by its ultra-wide angle and impressive distortion effect, SIGMA achieved a world-first for consumer cameras, combining a bright F1.4 aperture with high resolution across the entire frame. In terms of optical performance, excellent correction of various aberrations, particularly sagittal coma flare, delivers excellent point image reproduction and high resolution. Even in starry sky photography, which demands exceptional performance, this lens is fully capable, even at full aperture. Its rendering power, redefining conventional fisheye lenses, captures every corner of the 180° angle of view with high resolution, enabling it to capture classic scenes like starry skyscapes and architecture, while also opening up entirely new possibilities for expression.
Resolution that redefines fisheye lenses: The latest optical design thoroughly corrects all aberrations. This diagonal fisheye lens offers unparalleled expressive power, combining the distinctive fisheye expression and high resolution across the entire frame, even at full aperture. Its performance is guaranteed by 100% inspection using SIGMA's proprietary MTF measuring device.
High resolution and point image reproduction across the entire frame, even at full aperture, thanks to the luxurious lens design of 21 elements in 15 groups, including four FLD elements, three SLD elements, and two aspherical lenses, all made of special low-dispersion glass. By effectively correcting various aberrations, particularly sagittal coma flare, this lens achieves point-image reproduction and high resolution sufficient for starry sky photography, even at wide apertures.
180° Diagonal Fisheye Lens: The impressive distortion effect that is the hallmark of fisheye lenses allows you to enjoy a unique sense of perspective and subject emphasis across the entire 180° angle of view. In addition, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is designed to the strict standards of the Art line in terms of performance. Furthermore, every lens is inspected using SIGMA's proprietary MTF measuring device. The unique expression of fisheye lenses combined with astonishingly high resolution delivers unparalleled imaging capabilities, enabling expression beyond the bounds of conventional fisheye lenses.
Designed to Address Flare and Ghosting: Flare and ghosting, which degrade image quality, are addressed using cutting-edge simulation technology to address all types of incident light. High backlight resistance ensures clear, crisp images in any lighting conditions. The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is packed with features to support astrophotography. With the release of this lens, SIGMA's Art line of F1.4 wide-angle, prime lenses, specialized for astrophotography, now includes four lenses, along with the 14mm, 20mm, and 24mm. In terms of both lineup and functionality, SIGMA fully supports the joy of photographing the stars. The SIGMA Art line of F1.4 wide-angle prime lenses, specialized for astrophotography, now includes four lenses, along with the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art. This allows you to choose the equipment that best suits your needs and the expression you're aiming for. The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art features a Manual Focus Lock (MFL) switch that disables focus ring operation when set to "LOCK." Prevents focus shifts caused by unintentional operation of the focus ring. This is useful for long-exposure photography, where the focus is fixed.
Lens Heater Retainer: The step around the front of the lens heater retainer prevents the lens heater* from protruding from the front of the lens and causing vignetting around the edges of the image. *This belt-shaped heater is wrapped around the lens to prevent condensation inside the lens when the temperature drops.
Rear Filter Holder: The lens mount is equipped with a rear filter holder that can accommodate sheet-type rear filters as standard.
A dedicated cover lens cap with a locking mechanism is included. It also has filter slots that can accommodate two rear filters depending on the application. The cap is designed specifically for the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art, protecting sheet filters from scratches and dirt and preventing misplacement or forgetting them.
Arca-Swiss Type Compatible Tripod Mount: The included tripod mount is made of lightweight and durable magnesium alloy and is compatible with Arca-Swiss types. It can be mounted on a tripod stably, even for long exposures. The design is also thoughtful to prevent interference when using a lens heater.
Equipped with a variety of cutting-edge features and high-quality build: Equipped with a variety of shooting-assistance functions, including a customizable AFL button and aperture ring. The AF actuator uses a linear motor, HLA (High-response Linear Actuator), for fast, quiet, and highly accurate AF. It also boasts a dust- and weather-resistant construction and high build quality for long-term reliable use in any environment.
Equipped with a variety of shooting-assistance functions: The AFL button can be customized. In addition to the aperture ring, it also features an aperture ring lock switch and a click switch for turning the click on and off.
Dust- and Weather-Resistant Construction with Water- and Dirt-Resistant Coating: In addition to the dust- and weather-resistant body, the front of the lens is coated with a water- and dirt-repellent coating, allowing for worry-free shooting even in harsh outdoor environments.
Equipped with a Linear Motor: The AF actuator uses a linear motor, HLA (High-response Linear Actuator). A high-thrust motor operates the focus lens quickly and precisely, providing comfortable AF shooting.
High-quality build: Key parts of the body are constructed with metal to support the heavy optical system and enhance robustness and reliability. At the same time, lightweight engineering plastic TSC* is used in appropriate locations to reduce weight. Even the feel of each control, such as the rings and switches, has been carefully considered. SIGMA's uncompromising build quality ensures durability, ease of use, and a satisfying sense of ownership. *Polycarbonate has a thermal shrinkage rate equivalent to that of aluminum. Its high compatibility with metal parts contributes to the creation of high-precision products. [Accessories] - Case - Lens cover cap (LC1040-01) - Rear cap (LCR II) - Tripod mount (TS-141) - Protective cover (PT-51) - Guide plate (GP-21) - Shoulder strap ■ Specifications ■

Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical lenses) Angle of view: 180° Number of aperture blades: 11 (circular aperture) Minimum aperture: F16 Minimum focusing distance: 38.5cm Maximum magnification: 1:16 Filter size: - Maximum diameter x length: φ104.0mm x 157.9mm *Length is the distance from the tip of the lens to the mount surface. Weight: 1360g□ *Image is for illustrative purposes only. Manufacturer's warranty period: 1 year