Sigma 40mm F1.4 DG HSM A is a Fixed aperture Auto Focus (AF)
Standard Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
E Mount cameras.
The Sigma 40mm F1.4 DG HSM A is also available in the Nikon F (FX) and Sigma SA mounts.
What type of photography is the Sigma 40mm F1.4 DG HSM A lens good for?
The choice of photography type for which you intend to use the Sigma 40mm F1.4 DG HSM A is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
Reasons to Buy the Sigma 40mm F1.4 DG HSM A Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 40mm F1.4 DG HSM A lens in a list form to assist you in determining whether it offers the features you need.
| Weather-sealed |
| Autofocus |
| Distance Scale |
| Hood supplied |
| Full-time Manual Focusing |
| Very Fast Aperture |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
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Lens Mount
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have a Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Sigma 40mm F1.4 DG HSM A has a maximum diameter of 88mm and a total length of 157mm. It weighs 1260g / 44.4 oz.
Check the size of the Sigma 40mm F1.4 DG HSM A when attached to E Mount cameras:
Sigma 40mm F1.4 DG HSM A Size with E Mount Cameras
Sigma 40mm F1.4 DG HSM A has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 40mm F1.4 DG HSM A:
You can also check All Sony E Mount Lenses with 82mm Filter Thread Size to find the matching lenses.
Focal Range
Sigma 40mm F1.4 DG HSM A has a fixed focal length of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 60mm.
Weather Sealings
The Sigma 40mm F1.4 DG HSM A is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Sigma 40mm F1.4 DG HSM A with a weather-sealed camera body such as the Sony FX5, Sony A7R VI and Sony A7 V.
Maximum Magnification Ratio
Sigma 40mm F1.4 DG HSM A has a Max Magnification Ratio of 0.15x with a minimum focusing distance of 0.4m. 0.15x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Standard Prime type Sony E mount lens alternatives with highest max magnification ratios:
Aperture
The Sigma 40mm F1.4 DG HSM A features a maximum aperture of F1.4 and can be stopped down to a minimum aperture of F16. With an exceptionally wide F1.4 maximum aperture, this lens excels in challenging low-light environments, letting you shoot at lower ISO speeds to keep images clean and noise-free. At 40mm, this lens provides a natural perspective, and opening up to F1.4 offers clean background separation for typical everyday shooting. Stopping down to F16 gives you plenty of sweep for landscapes or outdoor group shots where you need everything sharp from front to back.
Optical Formula
Sigma 40mm F1.4 DG HSM A's optical formula consists of 16 elements in 12 groups . The following special elements are used in this design:
Lens Hood
Sigma 40mm F1.4 DG HSM A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Sigma 40mm F1.4 DG HSM A
Here are the 8 most popular comparisons of the Sigma 40mm F1.4 DG HSM A amongst Camera Decision readers.
Top Alternatives of Sigma 40mm F1.4 DG HSM A Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Sigma 40mm F1.4 DG HSM A.
Top Alternatives of Sigma 40mm F1.4 DG HSM A in Other Lens Mounts
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