Compare Samyang 20mm F1.8 ED AS UMC vs Panasonic S 18mm F1.8 vs Panasonic S 24mm F1.8
Construction
Aperture Blades
7 blades
9 blades, Circulate aperture desigm
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Lens Mount
Canon EF-mount, Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-mount
Leica L-mount
Leica L-mount
Material
Polycarbonate
Motor
Stepper motor
Linear Motor
Optical Formula | Elements
13 elements
13 elements
12 elements
Optical Formula | Groups
12 groups
12 groups
11 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
3 Aspheric, 1 UED, 3 ED, 1 UHR groups
3 aspherical + 1 UED + 3 ED elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
67 mm / 2.64 in
67 mm / 2.64 in
Size | Diameter
83 mm / 3.27 in
74 mm / 2.91 in
74 mm / 2.91 in
Size | Length
88 mm / 3.46 in
82 mm / 3.23 in
82 mm / 3.23 in
Weight
497 g / 17.56 oz
340 g / 12.01 oz
310 g / 10.95 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
Aperture
f/1.8 ~ f/22
f/1.8 ~ f/16
f/1.8 ~ f/16
Autofocus
No
Yes
Yes
Focal Length
20 mm
18 mm
24 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.2x
0.15x
Min Focus Distance
200 mm / 7.87 in
180 mm / 7.09 in
240 mm / 9.45 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2022-09-07
2021-09-01
Model Name
S-S24
Reviews
Neofiliac score
59%
68%
78%
Pros
- Rather affordable
- Rather lightweight
- Decent image quality
- Weather-sealed
- Solid build quality
- Rather lightweight
Cons
- Lacks weather sealing
- Not the highest grade of build
- Not very competitive
- Weak off-center
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