Compare Sigma 35mm F1.4 DG HSM vs Sigma 14mm F1.8 DG HSM vs Sony 20mm F1.8 G
Construction
Aperture Blades
9 blades, rounded
9 blades
Colors
Black
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Distance scale, DoF scale
Distance scale
Physical aperture ring
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount, Sony E-mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Sony E-mount
Material
Plastic barrel, metal mount
Motor
Ring-type ultrasonic
Ring-type ultrasonic
Linear Motor
Optical Formula | Elements
13 elements
16 elements
14 elements
Optical Formula | Groups
11 groups
11 groups
12 groups
Optical Formula | Special Glass
4 SLD glass elements, 1 FLD glass element, 2 aspherical elements groups
Three FLD and four SLD elements groups
2 aspherical + 3 ED elements, Nano AR coating groups
Dimensions
Filter Diameter
67 mm / 2.64 in
67 mm / 2.64 in
Size | Diameter
77 mm / 3.03 in
95 mm / 3.74 in
74 mm / 2.91 in
Size | Length
94 mm / 3.70 in
126 mm / 4.96 in
85 mm / 3.35 in
Weight
665 g / 23.50 oz
1170 g / 41.34 oz
373 g / 13.18 oz
Function
Angle Of View
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
114.2° Diagonal | 104.3° Horizontal | 81.2° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/1.4 ~ f/16
f/1.8 ~ f/16
f/1.8 ~ f/16
Autofocus
Yes
Yes
Yes
Focal Length
35 mm
14 mm
20 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.19x
0.1x
0.22x
Min Focus Distance
300 mm / 11.81 in
270 mm / 10.63 in
190 mm / 7.48 in
Production
Accessory
Lens Hood: LH730-03 (supplied)
Lens hood included
Lens hood included
Debut
2012-09-17
2017-02-21
2020-02-25
Made In
Japan
Japan
Model Name
SEL20F18G
Reviews
Neofiliac score
74%
55%
88%
Pros
- Superb image quality
- Excellent build quality
- Excellent image quality
- Very well built
- Weather-sealed
- Declickable aperture ring
- Very sharp corner to corner
- Low distortion
Cons
- Lacks weather sealing
- Notable comatic aberration
- Very large and heavy
- Lacks front filter thread
- Not the most solidly-built
- f/1.8 limiting for night photography
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