ART

50mm F1.2 DG DN

ART

50mm F1.2 DG DN

Available Mounts

L-Mount
Sony E-Mount

Highest descriptive power to take advantage of F1.2 brightness
Lightest weight lens body in its class*, suitable for a wide range of applications
A wealth of functions for professional use and excellent build quality

Unveiling another Sigma Art line F1.2 lens.
Elevating photographic mastery beyond conventional limits.

The lightest in its class* ― Bright F1.2 maximum aperture and the highest level of descriptive power from Sigma’s Art line

Sigma’s Art line has been offering new possibilities and surprise for expression, and now the Sigma 50mm F1.2 DG DN | Art is here to break the standards. Sigma’s focus with this lens is on the descriptive power that is perfectly usable from the widest aperture, and on portability that allows the high performance to be demonstrated in any field. In terms of image rendition, Sigma achieved high resolving power from the maximum aperture throughout the entire focus range, while also enriching the beauty of the large bokeh effect at F1.2. In addition, the lens construction and mechanical design have been stripped down to the bare essentials, resulting in a significantly compact and lightweight body. The lens is also equipped with a full range of functions suitable for professional use, including high-precision AF using the latest HLA (High-response Linear Actuator) that reduces volume while maintaining the same thrust. We hope users will enjoy the superb Art F1.2, which will transform everything they capture and even their photographic experience into something extra special.

* As an AF 50mm F1.2 interchangeable lens for full-frame mirrorless cameras. (As of March 2024 by Sigma)

Camera Type	Mirroless
Corresponding Mount	L-Mount, Sony E-Mount
Sensor Format	Full-frame [DG]
Lens Construction	17 elements in 12 groups (4 aspherical lens elements)
Angle of View	46.8°
Number of Diaphragm Blades	13 (rounded diaphragm)
Minimum Aperture	F16
Minimum Focusing Distance	40cm / 15.8in.
Maximum Magnification Ratio	1:6.2
Filter Size	φ72mm
Dimensions (Diameter × Length)	L-Mount：φ81.0mm x 108.8mm / φ3.2in. x 4.3in. Sony E-mount：φ81.0mm x 110.8mm / φ3.2in. x 4.4in.
Weight	L-Mount：745g / 26.3oz. Sony E-mount：740g / 26.1oz.
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 LH782-03 FRONT CAP LCF-72mm III REAR CAP LCR II
Mount / Product Barcode	L-Mount：00-85126-31669-3 Sony E-mount：00-85126-31665-5
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.

Highest descriptive power to take advantage of F1.2 brightness

The Sigma 50mm F1.2 DG DN | Art has been designed with an emphasis on high resolution from the maximum aperture to the full focus range and large, beautiful bokeh expression. The contrast between the sharpness of the focus surface and the melting bokeh effect creates a three-dimensional effect thanks to its F1.2 aperture. In addition, the 13-blade diaphragm allows for beautiful bokeh expressions. Focus breathing is also well-suppressed that the F1.2 rendering can be fully utilized in video recording.

Brightness of F1.2 maximum aperture and high resolution from minimum to infinity focus

The latest optical design achieves high resolving power with each aberration thoroughly suppressed from the maximum aperture. The lens is capable of rendering details without color bleeding in any situation. In addition, the incorporated floating focus is advantageous in improving short-range performance, ensuring a stable, high-level image quality throughout the entire range from the minimum focusing distance to infinity.

Rich and beautiful bokeh without color bleeding

By correcting spherical aberration, sagittal coma flare, axial chromatic aberration, and other aberrations, the lens delivers natural bokeh images that blur smoothly and without color bleeding from the focal plane. Double-line bokeh is also suppressed, allowing users to take advantage of the mellow bokeh effect in their expression.

Rounded diaphragm with 13 blades

The lens incorporates Sigma’s first 13-blade diaphragm, which maintains a circular shape even when stopped down from the maximum aperture. The surface accuracy of the aspherical lens has been enhanced to the utmost to enable smooth and beautiful round bokeh expressions.

Designed to minimize focus breathing

Optimization of the focus group arrangement and aspherical shape significantly suppresses focus breathing. The change in angle of view due to focus shift is minimized, creating a natural-looking focus shift when recording video.

Designed to minimize flare and ghosting

Flare and ghosting, which reduce image quality, are addressed under all conditions of incident light, based on the most advanced simulation technology. High backlight resistance enables clear and sharp images under any lighting conditions.

Lightest weight lens body in its class*, suitable for a wide range of applications

By uncompromisingly pursuing high optical performance and portability, which are inherently contradictory, the highest level of performance has been condensed into the lightest lens body in its class. The Sigma 50mm F1.2 DG DN | Art can be used not only in limited situations and applications, but in all kinds of shooting environments.

* As an AF 50mm F1.2 interchangeable lens for full-frame mirrorless cameras. (As of March 2024 by Sigma)

Dual HLA incorporating a new system

A new system was developed that significantly reduces the volume while maintaining the same thrust of the HLA, which is characterized by its high driving accuracy and quietness, and is featured in each of the two focus groups. This technological innovation has realized both high-speed autofocus and a compact lens body.

Dust- and splash-resistant structure^*1 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.

*1. 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.

New smaller and lighter HLA design

By precisely controlling the configuration of multiple magnets, the HLA provides sufficient thrust to quickly move the lens’s large-diameter focus elements, while achieving an approximate 25% reduction in unit thickness from the previous HLA design as well as a 44% reduction in total weight.

Lens construction and mechanical design stripped down to the absolute minimum

Each piece of glass is made as thin as possible while employing glasses with a high refractive index and four aspherical lenses. The high level of production technology at Sigma’s only manufacturing base, the Aizu factory, provides the exacting precision necessary for processing these thin glass elements and making this mass production possible. In addition, the floating focus construction ensures high performance while shortening the overall length, resulting in a compact lens. In the mechanical design phase, emphasis was placed on weight reduction. Through the systematic elimination of individual components, Sigma attained the distinction of producing the lightest lens in its class, weighing a mere 745g / 26.3oz.*

* These figures are for L-Mount.

Aspherical lens

^{Lens Construction: 17 elements in 12 groups (4 aspherical elements)}

A wealth of functions for professional use and excellent build quality

In addition to various functions that support photography, such as the AFL button ^* and an aperture ring, the construction of the lens body itself and its high-quality touch and feel are also pursued. The Sigma 50mm F1.2 DG DN | Art is designed with high functionality and reliability to meet the stringent demands of professionals, as well as excellent build quality for long-lasting, reliable use.

* Function available on supported cameras only. Available functions may vary depending on the camera used.

Proud to be a tool of expression, excellent build quality with Sigma’s Art line specifications

By assembling high-precision parts made of lightweight and strong TSC* and other materials, the lens has the high level of rigidity and durability of Sigma’s Art line specifications without sacrificing portability, as well as excellent build quality that allows for long-lasting and reliable use as a photographic tool.

* 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.

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.

LENS CONSTRUCTION

MTF Chart

DIFFRACTION MFT

GEOMETRICAL MFT

MTF CHART GUIDE

The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.

*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed.

Inner focus system

To increase stability, this lens configuration uses movable internal lens elements that adjust focus without changing the length of the lens barrel

HLA (High-response Linear Actuator)

HLA is Sigma’s proprietary linear motor. It drives the focus lens directly without going through gears or other mechanical parts, resulting in quiet, high-precision autofocusing.

Compatible with Lens Aberration Correction

Matching the optical characteristics of the lens, this function performs in-camera corrections of peripheral illumination, chromatic aberrations, distortion, and more, to further enhance image quality.

*Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model.
*On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON'(AUTO).

Super Multi-Layer Coating

Sigma’s own Super Multi-Layer Coating suppresses flare and ghosting by preventing reflections with in the lens. All lenses in the current Sigma range feature this original technology. In digital cameras, flare and ghosting may also be caused by reflections between the image sensor and lens surfaces. Here too, Sigma’s Super Multi-Layer Coating is highly ef fective, assuring images of outstanding contrast.

Water and oil repellent coating

Incorporates a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and fat from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.

Aperture ring

Aperture ring, designed to help users work intuitively

Aperture ring click switch

Mounted with a de-click function for removing clicks by the aperture ring click switch, enabling seamless operations that are especially useful such as during video shooting.

Aperture ring lock switch

A ring lock system to prevent from unintended movement of the aperture ring during shooting.

AFL button

the AFL button can be assigned with various functions widens the range of operations available on the lens.

Linear focus / Non-linear focus (for L-Mount only）

A focus movement method of interchangeable lenses for mirrorless cameras (DN lens) in relation to the rotational angle of the focus ring during manual focusing.
With “non-linear focus,” the amount of focal point movement varies depending on the focus ring rotational speed.
With linear focus, if the focus ring rotational angle is the same, the amount of focal point movement remains the same regardless of the focus ring rotational speed.

Focus Mode Switch

Using this swich, it is possible to switch the focus mode between AF and MF.

Dust and Splash Resistant Structure

This lens features a highly effective dust and splash resistant structure with special sealing at the mount connection, manual focus ring, zoom ring, and cover connection.

*Although this construction allows the lens to be used in light rain, it is not the same as being waterproof, so please prevent large amounts of water from splashing on the lens. It is often impractical to repair the internal mechanism, lens elements and electric components if they are damaged by water.

Hood with lock

Features a hood with lock to prevent dropping the hood.

Supports DMF and AF+MF

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

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

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

13-blade rounded diaphragm

High-precision, durable brass bayonet mount