Sigma 40mm f/1.4 DG HSM Art Lens for L-Mount

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Optical Performance That Meets The Requirements
Of High-End Cine Lenses

This SIGMA 40mm F1.4 DG HSM Art lens for L-mount effectively arranges three FLD (“F” Low Dispersion) glass elements and three SLD (Special Low Dispersion) glass elements to correct axial chromatic aberration and magnification chromatic aberration to the limit. A sharp image is formed on the focal plane with the maximum aperture and contrast with the soft bokeh in the out of focus area highlights the solidity of a subject. With a distortion of 1% or below and a sagittal coma flare corrected to the limit, it demonstrates a consistent optical characteristic over the entire sensor. This is the ultimate large-diameter standard lens that has both 8K-compatible resolution and beautiful bokeh.

Designed To Meet All Shooting Conditions

The water- and oil-repellent coating on the front lens element, together with the dust- and splash-resistant structure, ensures excellent performance even in the most challenging shooting conditions. The high-speed AF, thanks to the HSM (Hyper Sonic Motor) with an updated algorithm, captures instantaneous photography movement.

Inherits The Development Philosophy

High-end cine lenses used by professional filmmakers are required to have a consistent characteristic over the entire sensor at a high level, because these lenses are used to film a subject moving freely on the screen or while panning or tilting the camera. This represents exactly the concept of the Art Line; “optical performance comes first”, and the high-end cine lenses need to be designed with this idea. The SIGMA 40mm F1.4 DG HSM | Art is SIGMA’s first lens developed originally to live up to the sought-after angle of view and performance standard for a cine lens. This new perspective to ensure the quality of professional equipment for visual production empowers it to breakthrough also as an interchangeable photographic lens.

Native L-mount For A More Rigid And Stable Feel

Making the lens mount native for L-mount provides a much more rigid and stable feel to the lens than using an adapter. Featuring a surface treatment to enhance strength, the brass bayonet mount offers a high-precision fit and exceptional durability. The mount connection area incorporates rubber sealing for dust- and splash-resistant construction.

Lens construction

16 elements in 12 groups

Minimum aperture


Filter size


Angle of view (35mm)


Minimum focusing distance

40cm / 15.7in.

Dimensions (diameter × length)

φ87.8mm × 155mm / φ3.5in. × 6.1in.

Number of diaphragm blades

9 (Rounded diaphragm)

Maximum magnification ratio

1: 6.5


1,295g / 42.3oz.

Edition number*


Corresponding AF mount


 * About Edition number
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.)

Lens Construction

SIGMA 40mm F1.4 DG HSM Art lens Construction

Lens Distortion

SIGMA 40mm F1.4 DG HSM Art lens distortion

Diffraction MTF

SIGMA 40mm F1.4 DG HSM Art lens Diffraction MTF

Geometrical MTF

SIGMA 40mm F1.4 DG HSM Art lens Geometrical MTF


SIGMA 40mm F1.4 DG HSM Art lens Vignetting

In the Box:

  • Sigma 40mm f/1.4 DG HSM Art Lens for L-Mount
  • Sigma LCF-82 III 82mm Lens Cap
  • Sigma Rear Cap LCR II for L-Mount Lenses
  • LH878-01 Lens Hood
  • Lens Case
Find a Dealer |
Code: 4332969 MPN: 332969

or interest free for up to 12 months with

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