Compare Samyang 20mm F1.8 ED AS UMC vs Tamron 28-300mm F/3.5-6.3 vs Tamron 28-75mm F/2.8 Di III G2
Construction
Aperture Blades
7 blades
7 blades, Circular diaphragm
9 blades, Circular Diaphragm
Form Factor
Ultra Wide-Angle Prime Lens
All-in-One Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
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
Canon EF-mount, Nikon F-mount, Sony A-mount
Sony E-mount, Sony E-mount
Motor
Ultrasonic
Linear Motor
Optical Formula | Elements
13 elements
19 elements
17 elements
Optical Formula | Groups
12 groups
15 groups
15 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating 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
76 mm / 2.99 in
Size | Length
88 mm / 3.46 in
96 mm / 3.78 in
118 mm / 4.65 in
Weight
497 g / 17.56 oz
540 g / 19.08 oz
540 g / 19.08 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 8.3° Diagonal | 6.9° Horizontal | 4.6° Vertical (tele)
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
Aperture
f/1.8 ~ f/22
f/3.5–6.3 ~ f/22–40
f/2.8 ~ f/22
Autofocus
No
Yes
Yes
Focal Length
20 mm
28 mm ~ 300 mm
28 mm ~ 75 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
Yes
No
Weather Resistance
No
Yes
Zoom Type
External zoom (zoom lock available)
External zoom
Performance
Max Magnification
0.29x
0.37x
Min Focus Distance
200 mm / 7.87 in
490 mm / 19.29 in
180 mm / 7.09 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2014-02-06
2021-08-05
Model Name
A010
A063
Reviews
Neofiliac score
59%
60%
69%
Pros
- Rather affordable
- Optically stabilized
- Zoom lock prevents zoom creep
- Very sharp
- Weather-sealed
- Added customizability
- Priced like the G1
- Better built than the G1
Cons
- Lacks weather sealing
- Not the highest grade of build
- All-in-one lenses tend to offer lower IQ
- Not the highest grade of build
- External zoom without zoom lock
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