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Sigma 40mm F1.4 DG HSM A SA Mount Review

Sigma 40mm F1.4 DG HSM A

Main Features

  • 40mm Focal Range
  • F1.4 Max Aperture
  • Weather-sealed
  • Filter Thread: 82mm
  • Max Format: 35mm FF
  • Sigma SA Mount
  • Weight: 0g / 0.00 lb
  • Dimensions(øxL): 88mm x 131mm
  • Min Focus Distance: 0.4m
  • Max Magnification: 0.15x
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Sigma 40mm F1.4 DG HSM A Overview


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:

Photography Type Suitability
Bird/WildlifeFair
SportsFair
PortraitGood
TravelAverage
StreetVery Good
WeddingGood
Walk AroundAverage
VloggingGood
LandscapeGood
MacroPoor

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.

PROs
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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Buy Sigma 40mm F1.4 DG HSM A from Amazon or B&H PHOTO


CONs
Pricey


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:

  • 82mm Variable ND Lens Filters
  • 82mm Circular Polarizer Lens Filters
  • 82mm Clear Protection Lens Filters




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:

  • Sigma 50mm F1.4 DG HSM A: 0.18x - (Compare)
  • Sigma 30mm F1.4 DC HSM: 0.15x - (Compare)
  • Sigma 50mm F1.4 EX DG HSM: 0.14x - (Compare)

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:

  • 3 FLD
  • 3 SLD elements

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
Model Coverage Weight Focusing Street Price
Sigma 50mm F1.4 EX DG HSM Lens Sigma 50mm F1.4 EX DG HSM
Compare
35mm FF 505 g / 1.11 lb AF Amazon B&H Photo
Sigma 30mm F1.4 DC HSM Lens Sigma 30mm F1.4 DC HSM
Compare
APS-C / DX 435 g / 0.96 lb AF Amazon B&H Photo
Sigma 50mm F1.4 DG HSM A Lens Sigma 50mm F1.4 DG HSM A
Compare
35mm FF 815 g / 1.79 lb AF Amazon B&H Photo
Sigma 35mm F1.4 DG HSM Lens Sigma 35mm F1.4 DG HSM
Compare
35mm FF 665 g / 1.46 lb AF Amazon B&H Photo
Sigma 50mm F2.8 EX DG Macro Lens Sigma 50mm F2.8 EX DG Macro
Compare
35mm FF 320 g / 0.70 lb AF Amazon B&H Photo
Sigma 30mm F1.4 EX DC HSM Lens Sigma 30mm F1.4 EX DC HSM
Compare
APS-C / DX 430 g / 0.95 lb AF Amazon B&H Photo
Sigma 24-70mm F2.8 DG OS HSM Art Lens Sigma 24-70mm F2.8 DG OS HSM Art
Compare
35mm FF 1,020 g / 2.24 lb AF Amazon B&H Photo
Leica Summilux-TL 35mm F1.4 ASPH Lens Leica Summilux-TL 35mm F1.4 ASPH
Compare
APS-C / DX 128 g / 0.28 lb AF Amazon B&H Photo


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate, I earn from qualifying purchases.

Sigma 40mm F1.4 DG HSM A Alternatives in Sigma SA Mount
Model Coverage Weight Focusing Street Price
Sigma 50mm F1.4 EX DG HSM Lens Sigma 50mm F1.4 EX DG HSM
Compare
35mm FF 505 g / 1.11 lb AF Amazon B&H Photo
Sigma 50mm F2.8 EX DG Macro Lens Sigma 50mm F2.8 EX DG Macro
Compare
35mm FF 320 g / 0.70 lb AF Amazon B&H Photo
Sigma 28mm F1.4 DG HSM A Lens Sigma 28mm F1.4 DG HSM A
Compare
35mm FF 865 g / 1.90 lb AF Amazon B&H Photo
Sigma 28mm F1.8 EX DG Aspherical Macro Lens Sigma 28mm F1.8 EX DG Aspherical Macro
Compare
35mm FF 500 g / 1.10 lb AF Amazon B&H Photo
Sigma 30mm F1.4 DC HSM Lens Sigma 30mm F1.4 DC HSM
Compare
APS-C / DX 435 g / 0.96 lb AF Amazon B&H Photo
Sigma 30mm F1.4 EX DC HSM Lens Sigma 30mm F1.4 EX DC HSM
Compare
APS-C / DX 430 g / 0.95 lb AF Amazon B&H Photo
Sigma 35mm F1.4 DG HSM Lens Sigma 35mm F1.4 DG HSM
Compare
35mm FF 665 g / 1.46 lb AF Amazon B&H Photo
Sigma 50mm F1.4 DG HSM A Lens Sigma 50mm F1.4 DG HSM A
Compare
35mm FF 815 g / 1.79 lb AF Amazon B&H Photo

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Sigma 40mm F1.4 DG HSM A Detailed Specifications


General
Brand Sigma
Lens Type Prime
Lens Type Standard Prime
Lens Mount Sigma SA
Max Format 35mm FF
Focal Range 40mm
Image Stabilization
Colour Unknown
Zoom Method No Zoom
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 1.0X
APERTURE
Max Aperture F1.4
Min Aperture F16
Aperture Ring No
Diaphragm Blades 9
Optics
Optical Elements 16
Optical Groups 12
Special Elements 3 FLD + 3 SLD elements

FOCUSING
Min Focus Distance 0.4m
Max Magnification 0.15X
Autofocus Yes
AF Motor Type Ring-type ultrasonic
Full Time Manual Yes
Focus Method Internal
Distance Scale Yes
DoF Scale No
PHYSICAL SPECS
Weight 0g
Diameter 88mm
Length 131mm
Weather Sealing Yes
Filter Thread 82mm
Filter Notes -
Hood Supplied Yes
Tripod Collar No
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Frequently Asked Questions about Sigma 40mm F1.4 DG HSM A
is the Sigma 40mm F1.4 DG HSM A a Weather-sealed lens?
What is the Minimum Focusing Distance of Sigma 40mm F1.4 DG HSM A
is the Sigma 40mm F1.4 DG HSM A an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 40mm F1.4 DG HSM A
Does Sigma 40mm F1.4 DG HSM A have Image Stabilization?
Does Sigma 40mm F1.4 DG HSM A have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 40mm F1.4 DG HSM A


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