Compare Sigma 20mm F1.4 DG HSM vs Sony 50mm F1.4 ZA
Construction
Aperture Blades
9 blades, Rounded blades
11 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Physical aperture ring
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Sony E-mount
Motor
Ring-type ultrasonic
Ring-type ultrasonic
Optical Formula | Elements
15 elements
12 elements
Optical Formula | Groups
11 groups
9 groups
Optical Formula | Special Glass
Two FLD, five SLD elements + Super Multi-Layer coating groups
2 aspherical + 1 ED element + Zeiss T* coating groups
Dimensions
Filter Diameter
72 mm / 2.83 in
Size | Diameter
91 mm / 3.58 in
84 mm / 3.31 in
Size | Length
130 mm / 5.12 in
108 mm / 4.25 in
Weight
950 g / 33.57 oz
778 g / 27.49 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.4 ~ f/16
f/1.4 ~ f/16
Autofocus
Yes
Yes
Focal Length
20 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.14x
0.15x
Min Focus Distance
300 mm / 11.81 in
450 mm / 17.72 in
Production
Accessory
Lens hood included
Lens Hood: ALC-SH143 (supplied)
Debut
2015-10-16
2016-07-11
Made In
Japan
Model Name
SEL50F14Z
Reviews
Neofiliac score
55%
88%
Pros
- High level of resolution
- Bright maximum aperture
- Exceptional sharpness
- Bright maximum aperture
- Weather-sealed
- Declickable aperture ring
Cons
- Large and heavy
- Lacks front filter thread
- Lacks weather sealing
- A bit heavy
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