Compare Sigma 20mm F1.4 DG HSM vs Sigma 24mm F1.4 DG HSM vs Sigma 50mm F1.4 DG HSM
Construction
Aperture Blades
9 blades, Rounded blades
9 blades
9 blades, Rounded diaphragm
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Distance scale
Distance scale, DoF scale
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony A-mount, Sony E-mount, Leica L-mount
Motor
Ring-type ultrasonic
Ultrasonic
Ring-type ultrasonic
Optical Formula | Elements
15 elements
15 elements
13 elements
Optical Formula | Groups
11 groups
11 groups
8 groups
Optical Formula | Special Glass
Two FLD, five SLD elements + Super Multi-Layer coating groups
FLD and SLD elements groups
SLD glass elements, aspheric elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
Size | Diameter
91 mm / 3.58 in
85 mm / 3.35 in
85 mm / 3.35 in
Size | Length
130 mm / 5.12 in
90 mm / 3.54 in
100 mm / 3.94 in
Weight
950 g / 33.57 oz
665 g / 23.50 oz
815 g / 28.80 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.4 ~ f/16
f/1.4 ~ f/16
f/1.4 ~ f/16
Autofocus
Yes
Yes
Yes
Focal Length
20 mm
24 mm
50 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.14x
0.18x
Min Focus Distance
300 mm / 11.81 in
250 mm / 9.84 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Debut
2015-10-16
2015-02-10
2014-01-06
Made In
Japan
Japan
Japan
Reviews
Neofiliac score
55%
83%
74%
Pros
- High level of resolution
- Bright maximum aperture
- High level of resolution
- Bright maximum aperture
- Beautifully made
- Exceptional sharpness
- Solid build quality
- Bright maximum aperture
Cons
- Large and heavy
- Lacks front filter thread
- Lacks weather sealing
- Surpassed by newer lenses
- On the heavy side
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