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Sigma 40mm f/1.4 DG HSM Art Lens for Canon EF

BH #SI4014DGC • MFR #332954
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Sigma 40mm f/1.4 DG HSM Art Lens for Canon EF
Key Features
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/1.4 to f/16
  • Three FLD Elements, Three SLD Elements
  • One Aspherical Element
Designed within the rigorous tolerances of a cine lens, the Canon EF-mount Sigma 40mm f/1.4 DG HSM Art Lens is a wide normal-length lens characterized by a bright design and sophisticated optical layout. The fast f/1.4 maximum aperture helps to achieve shallow depth of field and selective focus effects, and also suits working in difficult lighting conditions. The optical design incorporates a series of low dispersion and aspherical elements, which help to improve sharpness and clarity by controlling both spherical and chromatic aberrations. A Super Multi-Layer Coating is also featured, and helps to minimize flare and ghosting for greater contrast and color accuracy when working in strong lighting conditions.
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Sigma 40mm f/1.4 DG HSM Art Overview

Designed within the rigorous tolerances of a cine lens, the Canon EF-mount Sigma 40mm f/1.4 DG HSM Art Lens is a wide normal-length lens characterized by a bright design and sophisticated optical layout. The fast f/1.4 maximum aperture helps to achieve shallow depth of field and selective focus effects, and also suits working in difficult lighting conditions. The optical design incorporates a series of low dispersion and aspherical elements, which help to improve sharpness and clarity by controlling both spherical and chromatic aberrations. A Super Multi-Layer Coating is also featured, and helps to minimize flare and ghosting for greater contrast and color accuracy when working in strong lighting conditions.

Complementing the imaging capabilities, the lens sports a Hyper Sonic Motor to produce quick, smooth, and quiet autofocus performance with full-time manual focus override. The physical design features a brass bayonet mount, which offers rigidity and mounting precision along with a seal to guard against dust and moisture. Additionally, a rounded nine-blade diaphragm contributes to a pleasing bokeh quality.

As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
Short-normal prime is designed for full-frame Canon EF-mount cameras, however is also suitable for APS-C models where it provides a 64mm equivalent focal length.
Impressively bright f/1.4 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.
Three F Low Dispersion (FLD) and three Special Low Dispersion (SLD) elements are featured in the optical design, and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
One aspherical element is used to help limit distortion and spherical aberrations and also contributes to greater overall sharpness and accurate rendering.
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
Specialized electromagnetic aperture mechanism provides greater exposure control stability that is especially beneficial when working with fast continuous shooting rates.
The bayonet mount is constructed from brass for ensured accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust- and splash-resistant.
Protective coating has been applied to the front element and is both water and oil-repellent to aid in cleaning.
This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.

Sigma 40mm f/1.4 DG HSM Art Specs

Focal Length
40mm
Maximum Aperture
f/1.4
Minimum Aperture
f/16
Lens Mount
Canon EF
Lens Format Coverage
Full-Frame
Angle of View
56.8°
Minimum Focus Distance
1.31' / 40 cm
Maximum Magnification
0.15x
Optical Design
16 Elements in 12 Groups
Diaphragm Blades
9, Rounded
Focus Type
Autofocus
Image Stabilization
No
Filter Size
82 mm (Front)
Dimensions (ø x L)
3.46 x 5.16" / 87.8 x 131 mm
Weight
2.65 lb / 1.2 kg
Packaging Info
Package Weight
3.86 lb
Box Dimensions (LxWxH)
8.8 x 7 x 6"

Sigma 40mm f/1.4 DG HSM Art Reviews

See any errors on this page? Let us know

Autofocus using the Viewfinder is ACCURATE & ...

Autofocus using the Viewfinder is ACCURATE & CONSISTENT? Because many Sigma Art lenses are not good in this situation, even after tweaking with USB-Dock... Canon lenses are almost perfect and always reliable in terms of AF, but my experience with Sigma gave only about 50% real in-focus pictures WHEN USING the VIEWFINDER (on many cameras, no microadjustment related issue). If I use LiveView the, of course, the AF is always perfect. Thanks!
Asked by: PABLO
the lenses is built to be reliable and accurate. Sometimes you can get a lens with issues which is exchangeable and/or fixable.
Answered by: stuart e
Date published: 2020-01-15

If you use the Sigma Dock to calibrate the lens ...

If you use the Sigma Dock to calibrate the lens focusing, do you need to use the camera's micro AF adjustments as well?
Asked by: Robert
If you calibrate the lens with Sigma Dock and the focus is still off then you should use micro AF adjustment in camera
Answered by: vilson
Date published: 2021-02-11

Is there any problem with the IBIS when adapted ...

Is there any problem with the IBIS when adapted on R6/R5?
Asked by: Dima
I have the R5 with the 50mm Art lens and the IBIS works perfectly with it, I would assume this 40mm does too.
Answered by: Mike
Date published: 2023-01-08

What is the focus throw (degree of rotation) from ...

What is the focus throw (degree of rotation) from minimal to infinity of this lens? When doing manual focus, is the focusing speed linear? Thanks.
Asked by: Anonymous
It has roughly a 120 degree focus throw from minimum to infinity. Keep in mind that the lens itself has no hard stop and the focus ring can spin infinitely. Its focus speed is linear throughout its range.
Answered by: Jeremy
Date published: 2021-10-24

This lens is for a full frame format camera , I ...

This lens is for a full frame format camera , I have a canon mirrowless M5 APS-c format . Would it work ok?
Asked by: Antonio David
You would need to adapt the lens by using the Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses, BH # CALA http://bhpho.to/30dls9g
Answered by: Kirk
Date published: 2021-01-13

Is the AF loud? (e.g. can this be used for video ...

Is the AF loud? (e.g. can this be used for video work?)
Asked by: David
This lens would be very good for video and it is relatively quiet.
Answered by: Rob
Date published: 2021-01-25

For Sony shooters , This or the Ziess Batis 40mm ...

For Sony shooters , This or the Ziess Batis 40mm f2 ?
Asked by: Mohammed
Get the Sigma 40mm it's a killer. Sharp across the whole flat field. One of the best lenses being produced today.
Answered by: James
Date published: 2023-01-08

How long is this lens? Why are two different ...

How long is this lens? Why are two different versions of this lens shown in the photos?
Asked by: Carl
I have both lenses and BH has the images mixed up for this lens. They have a bunch of pictures of the DSLR version of the lens which is 131mm long. The mirrorless version for Sony E and Leica L are 158mm long. They are both the same diameter. Sigma even included the wrong length in the product description card with the Leica L version - perhaps they have not gotten around to printing the different dimensions for the mirrorless versions. This should be fixed because a little over an inch difference in length for the same lens is substantial.
Answered by: Mark
Date published: 2022-12-09
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