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Sigma 50mm F1.4 DG HSM A vs Canon EF 40mm f2.8 STM

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Sigma 50mm F1.4 DG HSM A

Standard Prime | Canon EF

Sigma 50mm F1.4 DG HSM A
CHECK PRICE

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Canon 40mm f2.8 STM

Standard Prime | Canon EF

Canon EF 40mm f2.8 STM
CHECK PRICE

BUY from B&H PHOTO

Sigma 50mm F1.4 DG HSM A vs Canon 40mm f2.8 STM Comparison Overview

In this review, we will be comparing Sigma 50mm F1.4 DG HSM A and Canon 40mm f2.8 STM, two Standard Prime lenses from Sigma and Canon.

We will start with briefly looking and the main specs of these two lenses and in the section, we will start analyzing in more detail and list the pros and cons of each lenses.

Sigma 50mm F1.4 DG HSM A Key Specs

  • 50mm Focal Range
  • F1.4 Max Aperture
  • Filter Thread: 77mm
  • Max Format: 35mm FF
  • Canon EF Mount
  • Weight: 815g.
  • Diameter: 85mm
  • Length: 100mm
  • Min Focus Distance:0.4m
  • Max Magnification:0.18x

Canon 40mm f2.8 STM Key Specs

  • 40mm Focal Range
  • F2.8 Max Aperture
  • Filter Thread: 52mm
  • Max Format: 35mm FF
  • Canon EF Mount
  • Weight: 130g.
  • Diameter: 68mm
  • Length: 22mm
  • Min Focus Distance:0.3m
  • Max Magnification:0.18x

What type of photography are the Sigma 50mm F1.4 DG HSM A and Canon 40mm f2.8 STM lenses good for?

The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.4 DG HSM A and the Canon 40mm f2.8 STM for their suitability to various photography scenarios:

Photography Type Sigma 50mm F1.4 DG HSM A Canon 40mm f2.8 STM
Bird/WildlifeFairFair
SportsAverageFair
PortraitExcellentGood
TravelGoodAverage
StreetVery GoodVery Good
WeddingExcellentGood
Walk AroundGoodAverage
VloggingGoodGood
LandscapeGoodGood
MacroPoorPoor

Size and Weight Comparison

Size of a lens is an important deciding factor when comparing two lenses.Sigma 50mm F1.4 DG HSM A is the longer of the two lenses at 100mm. The Canon 40mm f2.8 STM with a length of 22mm is 78mm shorter. Besides being longer, the Sigma 50mm F1.4 DG HSM A also has a larger diameter of 85mm compared to Canon 40mm f2.8 STM's 68mm diameter.

Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Canon 40mm f2.8 STM weighs 130g, 84% (685g) lighter than the Sigma 50mm F1.4 DG HSM A's weight of 815g.


Below you can find the dimension and weight table of the 'Standard Prime Lenses in Canon EF Mount for size comparison purposes.

Standard Prime Lenses in Canon EF Mount for Size Comparison
Model Length Diameter Weight Street Price
Canon EF 50mm f1.8 STM Lens Canon EF 50mm f/1.8 STM
39mm
69mm 159g Amazon B&H Photo
Canon EF 50mm f1.4 USM Lens Canon 50mm f1.4 USM
51mm
74mm 290g Amazon B&H Photo
Canon EF 50mm f1.8 II Lens Canon 50mm f1.8 II
41mm
68mm 130g Amazon B&H Photo
Sigma 30mm F1.4 DC HSM Lens Sigma 30mm F1.4 DC HSM
63mm
74mm 435g Amazon B&H Photo
Canon EF 50mm f1.2L USM Lens Canon 50mm f1.2L USM
66mm
86mm 580g Amazon B&H Photo
Tamron SP 45mm F1.8 Di VC USD Lens Tamron 45mm F1.8 Di VC USD
92mm
80mm 540g Amazon B&H Photo
Samyang XP 35mm F1.2 Lens Samyang XP 35mm F1.2
117mm
93mm 1106g Amazon B&H Photo
Sigma 40mm F1.4 DG HSM A Lens Sigma 40mm F1.4 DG HSM A
131mm
88mm 0g Amazon B&H Photo

Lens Mounts

Both Sigma 50mm F1.4 DG HSM A and Canon 40mm f2.8 STM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.

Sigma 50mm F1.4 DG HSM A is also available in Sony Alpha , Sigma SA, Nikon F (FX) and Leica L mounts.

Focal Range

Sigma 50mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 80mm.
Canon 40mm f2.8 STM is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 64mm.

Reasons to choose Sigma 50mm F1.4 DG HSM A over Canon EF 40mm f2.8 STM

Focal Length - Tele 50mm vs 40mm 10mm more Tele coverage
Max Aperture - Wide 1.4 vs 2.8 Wider aperture at wide end
Max Aperture - Tele 1.4 vs 2.8 Wider aperture at tele end
Diaphgragm Blades 9 vs 7 Potentially more rounded and smooth bokeh
Distance Scale Yes vs No Distance Scale to assist focusing
Depth-of-Field Scale Yes vs No Depth of Field scale to assist focusing

Reasons to choose Canon EF 40mm f2.8 STM over Sigma 50mm F1.4 DG HSM A

Focal Length - Wide 40mm vs 50mm 10mm Wider coverage
Weight 130g vs 815g 685g lighter
Diameter 68mm vs 85mm 17mm smaller in diameter
Length 22mm vs 100mm 78mm shorter
Filter Thread 52mm vs 77mm Smaller filters are cheaper and easier to find
Minimum Focus Distance 0.3m vs 0.4m can focus closer to the subject
Common Weaknesses of Sigma 50mm F1.4 DG HSM A and Canon EF 40mm f2.8 STM
Image Stabilization No vs No Reliant on in-body Image Stabilization
Weather Sealing No vs No not safe under rain and dust



**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 50mm F1.4 DG HSM A vs Canon 40mm f2.8 STM Specs Table

Detailed comparison of specifications
General
Brand Sigma Canon
Lens Type Prime Prime
Price CHECK PRICE CHECK PRICE
Lens Type Standard Prime Standard Prime
Lens Mount Canon EF Canon EF
Max Format 35mm FF 35mm FF
Focal Range 50mm 40mm
Image Stabilization No No
Colour Unknown Black
Zoom Method No Zoom No Zoom
Power Zoom No No
Zoom Lock No No
Zoom Ratio 1.0X 1.0X
Aperture
Max Aperture F1.4 F2.8
Min Aperture F16.0 F22.0
Aperture Ring No No
Diaphragm Blades 9 7
Optics
Optical Elements 13 6
Optical Groups 8 4
Focusing
Min Focus Distance 0.4m 0.3m
Max Magnification 0.18X 0.18X
Autofocus Yes Yes
AF Motor Type Ring-type ultrasonic Stepper motor
Full Time Manual Yes Yes
Focus Method Internal Unit
Distance Scale Yes No
DoF Scale Yes No
Distance Scale Yes No
Focus Distance Limiter Unknown Unknown
Physical Specs
Weight 815g 130g
Diameter 85mm 68mm
Length 100mm 22mm
Materials Unknown Unknown
Weather Sealing Unknown No
Filter Thread 77mm 52mm
Filter Notes - -
Hood Supplied Unknown No
Hood Code Unknown Unknown
Tripod Collar No No
Optional Accessories - -
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