Compare Samyang 300mm F6.3 ED UMC CS vs Samyang 24mm F1.4 ED AS IF UMC vs Sony 20mm F1.8 G
Construction
Colors
Black
Black
Form Factor
Super Telephoto Prime Lens
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring
Lens Mount
Canon EF-mount, Micro Four Thirds-mount, Nikon F-mount, Sony A-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
8 elements
13 elements
14 elements
Optical Formula | Groups
8 groups
12 groups
12 groups
Optical Formula | Special Glass
4 ED glass elements, 2 aspherical elements groups
2 aspherical + 3 ED elements, Nano AR coating groups
Dimensions
Filter Diameter
25.5 mm / 1.00 in
77 mm / 3.03 in
67 mm / 2.64 in
Size | Diameter
65 mm / 2.56 in
83 mm / 3.27 in
74 mm / 2.91 in
Size | Length
74 mm / 2.91 in
85 mm / 3.35 in
Weight
260 g / 9.19 oz
373 g / 13.18 oz
Function
Angle Of View
5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/6.3
f/1.4 ~ f/22
f/1.8 ~ f/16
Autofocus
No
No
Yes
Crop Factor
1.5
Focal Length
300 mm
24 mm
20 mm
Focal Length (35mm Equivalent)
450.0 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.22x
Min Focus Distance
1100 mm / 43.31 in
250 mm / 9.84 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Debut
2014-04-28
2011-08-12
2020-02-25
Model Name
SEL20F18G
Reviews
Neofiliac score
40%
59%
88%
Pros
- Very light and compact for the focal length
- Affordable for the focal length
- Bright maximum aperture
- Affordable choice in its class
- Weather-sealed
- Declickable aperture ring
- Very sharp corner to corner
- Low distortion
Cons
- Reflex / mirror construction results in low IQ
- Dark fixed f/6.3 aperture
- 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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