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
SA Mount cameras.
What type of photography is the Sigma 40mm F1.4 DG HSM A lens good for?
The type of photography that you are planning to use the Sigma 40mm F1.4 DG HSM A is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Reasons to Buy 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 help you determine 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 |
| Light weight at only 0g / 0.0 oz |
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Lens Mount
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have a Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 40mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX), Sony E and Leica L mounts.
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Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 40mm F1.4 DG HSM A has a maximum diameter of 88mm and total length of 131mm. It weighs 0g / 0.0 oz.
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:
Focal Range
Sigma 40mm F1.4 DG HSM A has a fixed focal length of 40mm.
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 Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Maximum Magnification Ratio
Sigma 40mm F1.4 DG HSM A has a Max Magnification Ratio of 0.15x and has a minimum focusing distance of 0.4m. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Below are the 3 Standard Prime type Sigma SA mount lens alternatives with highest max magnification ratios:
Aperture
Sigma 40mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.
Optical Formula
Sigma 40mm F1.4 DG HSM A's optical formula consists of 16 elements in 12 groups . 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 eight 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
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