- Lens construction: 14 elements in 11 groups, with 1 SLD and 3 aspherical elements
- Internal focus system
- Compatible with high-speed autofocus
- HLA (High-response Linear Actuator) AF motor
- Compatible with Lens Aberration Correction
- Support for DMF and AF+MF
- Compatible with AF Assist (Sony E-mount only)
- Super Multi-Layer Coating
- Water- and oil-repellent coating (front element)
- AFL Button
- Support for switching between linear and non-linear focus ring settings (L-Mount only)
- Aperture Ring
- Aperture Ring De-click Switch
- Aperture Ring Lock Switch
- Dust- and splash-resistant structure
SIGMA 50mm F1.4 DG DN Art, designed specifically for mirrorless cameras, and available in L-Mount and Sony E-mount, it offers even better optical performance than SIGMAs existing 50mm F1.4 DG HSM, as well as faster and more precise AF, a smaller and lighter body, an aperture ring and AFL button, and smoother bokeh. The result is a true all-round optic that is ideal for portrait, wedding, street, landscape and family photography, and an excellent option for video. It delivers exceptional expressive performance to help photographers achieve striking and characterful images that display remarkable detail.
Outstanding optical performance
Building on the reputation of the existing SIGMA 50mm F1.4 DG HSM | Art as one of the highest-performing standard zooms on the market, this new mirrorless optic delivers even sharper results across the frame, particularly towards the periphery. Employing the latest optical design technology, the lens is constructed of 14 elements in 11 groups, including one SLD (Special Low Dispersion) element and three apsherical elements. It delivers significant improvements to sagittal coma flare and effectively suppresses various aberrations such as astigmatism and field curvature, which cannot be corrected digitally.
This new standard prime boasts an ultra-wide aperture of F1.4, making it ideal for low-light photography such as concerts, interiors and weddings. It also delivers a very shallow depth-of-field for background blur, which is perfect for creating stand-out portraits. The bokeh is smooth and attractive, and thanks to the lens’s 11 diaphragm blades, the out-of-focus highlights are nicely rounded. Even when working wide-open at F1.4, photographers can be assured of razor-sharp edge-to-edge results.
All-new ultra-fast AF motor
The SIGMA 50mm F1.4 DG DN | Art is the first DG DN lens in the Art line to incorporate SIGMA's new HLA (Highresponse Linear Actuator) autofocus motor technology. This ensures fast, accurate and near-silent focusing, and despite its ultra-wide aperture, exceptionally fast tracking performance. Owing to the power of the new HLA motor, Sigma engineers were able to use a single double-sided aspherical element as the focusing lens – a stark contrast to the eight-element focusing group on Sigma’s existing 50mm F1.4 DG HSM | Art. This has delivered both autofocus and optical design benefits.
Advanced feature-set designed for professional use
The lens barrel is equipped with a range of useful functions. As well as a manual aperture ring, the lens has an Aperture Ring Click switch, which allows users to switch between stepped, third-stop aperture increments and a smooth, click-free action. This is particularly useful for videographers who may want to use the aperture to adjust exposure seamlessly while filming. The aperture ring can be locked with lock switch.
The lens has an AFL button, which can be customised to perform a range of different functions (depending oncamera model).
Also on the lens barrel is an Focus Mode switch, a rubberised focus ring with a smooth, fluid-like movement, and a robust, petal-type lens hood with lock button. The hood also has a rubberised grip for easy attachment and removal.
For L-Mount users, the 50mm F1.4 DG DN | Art can be connected to Sigma’s USB Dock for customisation and adjustment, including switching between linear and non-linear focus ring movement.
|Formule optique||14 elements, 11 groups (1 SLD and 3 aspherical elements)|
|Sensor Size||Full Frame|
|Angle de vue||46.8°|
|Diaphragme||11 (rounded diaphragm)|
|Distance minimale de mise au point||25cm|
|Rapport de reproduction maximal||1:6.8|
|Dimensions (diamètre x longueur)||φ78.2mm x 109.5mm|
|Poids (gramme)||670 gram|
|Diamètre de filtre||72mm|