Compare Sigma 14mm F1.8 DG HSM vs Sigma 20mm F1.4 DG HSM vs Sigma 50mm F1.4 DG HSM
Construction
Aperture Blades
9 blades
9 blades, Rounded blades
9 blades, Rounded diaphragm
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra 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
Ring-type ultrasonic
Ring-type ultrasonic
Optical Formula | Elements
16 elements
15 elements
13 elements
Optical Formula | Groups
11 groups
11 groups
8 groups
Optical Formula | Special Glass
Three FLD and four SLD elements groups
Two FLD, five SLD elements + Super Multi-Layer coating groups
SLD glass elements, aspheric elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
Size | Diameter
95 mm / 3.74 in
91 mm / 3.58 in
85 mm / 3.35 in
Size | Length
126 mm / 4.96 in
130 mm / 5.12 in
100 mm / 3.94 in
Weight
1170 g / 41.34 oz
950 g / 33.57 oz
815 g / 28.80 oz
Function
Angle Of View
114.2° Diagonal | 104.3° Horizontal | 81.2° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/16
f/1.4 ~ f/16
f/1.4 ~ f/16
Autofocus
Yes
Yes
Yes
Focal Length
14 mm
20 mm
50 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.1x
0.14x
0.18x
Min Focus Distance
270 mm / 10.63 in
300 mm / 11.81 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2017-02-21
2015-10-16
2014-01-06
Made In
Japan
Japan
Japan
Reviews
Neofiliac score
55%
55%
74%
Pros
- Excellent image quality
- Very well built
- High level of resolution
- Bright maximum aperture
- Exceptional sharpness
- Solid build quality
- Bright maximum aperture
Cons
- Notable comatic aberration
- Very large and heavy
- Lacks front filter thread
- Large and heavy
- Lacks front filter thread
- Lacks weather sealing
- On the heavy side
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