Compare Samyang 20mm F1.8 ED AS UMC vs 7artisans 55mm F1.4 vs Samyang 85mm F1.8 ED UMC CS
Construction
Aperture Blades
7 blades
9 blades
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Short Telephoto Prime Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF 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-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Canon EF-M-mount, Fujifilm X-mount, Sony E-mount
Material
Aluminum
Optical Formula | Elements
13 elements
6 elements
9 elements
Optical Formula | Groups
12 groups
5 groups
7 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 ED + 1 HRI element, Ultra Multi-Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
52 mm / 2.05 in
62 mm / 2.44 in
Size | Diameter
83 mm / 3.27 in
60 mm / 2.4 in
68 mm / 2.68 in
Size | Length
88 mm / 3.46 in
65 mm / 2.60 in
81 mm / 3.19 in
Weight
497 g / 17.56 oz
272 g / 9.61 oz
344 g / 12.16 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
29.4° Diagonal | 24.6° Horizontal | 16.6° Vertical
19.3° Diagonal | 16.1° Horizontal | 10.8° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/16
f/1.8 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
1.5
Focal Length
20 mm
55 mm
85 mm
Focal Length (35mm Equivalent)
82.5 mm
127.5 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
No
Performance
Min Focus Distance
200 mm / 7.87 in
420 mm / 16.54 in
650 mm / 25.59 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2021
2018-08-27
Reviews
Neofiliac score
59%
59%
50%
Pros
- Rather affordable
- Bright maximum aperture
- Reasonably lightweight
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks weather sealing
- Not very solid
- Larger and heavier than Mark I
- Lower maximum magnification than Mark I
- Lacks weather sealing
- Not the best build from Samyang
- Not the best rendering
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