Compare Samyang T-S 24mm F3.5 vs Samyang 24mm F1.4 ED AS IF UMC vs Sony 20mm F1.8 G
Construction
Aperture Blades
8 blades
Colors
Black
Black
Black
Form Factor
Wide-Angle Prime Lens
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Canon EF-mount, Nikon F-mount, Micro Four Thirds-mount, Pentax K-mount, Sony A-mount, Sony E-mount, Samsung NX-mount
Sony E-mount
Motor
Linear Motor
Optical Formula | Elements
16 elements
13 elements
14 elements
Optical Formula | Groups
11 groups
12 groups
12 groups
Optical Formula | Special Glass
2 aspheric elements groups
4 ED glass elements, 2 aspherical elements groups
2 aspherical + 3 ED elements, Nano AR coating groups
Dimensions
Filter Diameter
82 mm / 3.23 in
77 mm / 3.03 in
67 mm / 2.64 in
Size | Diameter
86 mm / 3.39 in
83 mm / 3.27 in
74 mm / 2.91 in
Size | Length
112 mm / 4.41 in
85 mm / 3.35 in
Weight
680 g / 24.03 oz
373 g / 13.18 oz
Function
Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/3.5 ~ f/22
f/1.4 ~ f/22
f/1.8 ~ f/16
Autofocus
No
No
Yes
Focal Length
24 mm
24 mm
20 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Yes
Performance
Max Magnification
0.22x
Min Focus Distance
200 mm / 7.87 in
250 mm / 9.84 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Debut
2012-09-07
2011-08-12
2020-02-25
Model Name
SEL20F18G
Reviews
Neofiliac score
40%
59%
88%
Pros
- Affordable tilt-shift form factor
- Good level of resolution
- Bright maximum aperture
- Affordable choice in its class
- Weather-sealed
- Declickable aperture ring
- Very sharp corner to corner
- Low distortion
Cons
- Lacks weather sealing
- Not the best optical performance overall
- Lacks weather sealing
- Not the best IQ
- Not the highest grade of construction
- Not the most solidly-built
- f/1.8 limiting for night photography
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