Compare Sigma 20mm F1.4 DG HSM vs Panasonic S 18mm F1.8
Construction
Aperture Blades
9 blades, Rounded blades
9 blades, Circulate aperture desigm
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Leica L-mount
Material
Polycarbonate
Motor
Ring-type ultrasonic
Stepper motor
Optical Formula | Elements
15 elements
13 elements
Optical Formula | Groups
11 groups
12 groups
Optical Formula | Special Glass
Two FLD, five SLD elements + Super Multi-Layer coating groups
3 Aspheric, 1 UED, 3 ED, 1 UHR groups
Dimensions
Filter Diameter
67 mm / 2.64 in
Size | Diameter
91 mm / 3.58 in
74 mm / 2.91 in
Size | Length
130 mm / 5.12 in
82 mm / 3.23 in
Weight
950 g / 33.57 oz
340 g / 12.01 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
Aperture
f/1.4 ~ f/16
f/1.8 ~ f/16
Autofocus
Yes
Yes
Focal Length
20 mm
18 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Performance
Max Magnification
0.14x
0.2x
Min Focus Distance
300 mm / 11.81 in
180 mm / 7.09 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2015-10-16
2022-09-07
Made In
Japan
Reviews
Neofiliac score
55%
68%
Pros
- High level of resolution
- Bright maximum aperture
- Rather lightweight
- Decent image quality
Cons
- Large and heavy
- Lacks front filter thread
- Lacks weather sealing
- Not very competitive
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