Compare Samyang 20mm F1.8 ED AS UMC vs Tamron 10-24mm F/3.5-4.5 Di II VC vs Tamron 17-70mm F/2.8
Construction
Aperture Blades
7 blades
7 blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
APS-C
APS-C
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
Canon EF-mount, Nikon F-mount
Sony E-mount
Motor
Stepper motor
Optical Formula | Elements
13 elements
16 elements
16 elements
Optical Formula | Groups
12 groups
11 groups
12 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Broad-band Anti-reflection & fluorine coatingsLD, XLD, aspherical, and hybrid aspherical elements. groups
1 aspherical + 2 glass-molded aspherical elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
67 mm / 2.64 in
Size | Diameter
83 mm / 3.27 in
84 mm / 3.31 in
75 mm / 2.95 in
Size | Length
88 mm / 3.46 in
85 mm / 3.35 in
119 mm / 4.69 in
Weight
497 g / 17.56 oz
440 g / 15.55 oz
525 g / 18.55 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical (wide) ~ 62.0° Diagonal | 53.1° Horizontal | 36.9° Vertical (tele)
80.7° Diagonal | 70.4° Horizontal | 50.4° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)
Aperture
f/1.8 ~ f/22
f/3.5–22 ~ f/4.5–29
f/2.8 ~ f/22
Autofocus
No
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
20 mm
10 mm ~ 24 mm
17 mm ~ 70 mm
Focal Length (35mm Equivalent)
15.0 mm ~ 36.0 mm
25.5 mm ~ 105.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
Yes
Yes
Weather Resistance
No
Yes
Yes
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.19x
0.21x
Min Focus Distance
200 mm / 7.87 in
240 mm / 9.45 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2017-02-06
2020-12-03
Model Name
B023
B070
Reviews
Neofiliac score
59%
69%
69%
Pros
- Rather affordable
- Optically stabilized
- Weather-sealed
- Good autofocus
- Optically stabilized
- Weather-sealed
- Fast AF
- Good image quality
Cons
- Lacks weather sealing
- Not the highest grade of build
- External zoom without zoom lock
- Not the highest build quality
- External zoom without zoom lock
Remove
Remove
Remove
Add up to 4 products to the comparison using the search bar above
Information on this page is provided on an as-is basis. No warranty on accuracy is implied. This page may contain affiliate links to third-party merchants such as Amazon and eBay. If you make a purchase using the supplied link, we may receive a commission. Neofiliac places the utmost respect for your privacy. We use no cookie whatsoever beyond that needed for the proper functioning of the website.