Compare Samyang 20mm F1.8 ED AS UMC vs 7Artisans 35mm F1.2 vs 7Artisans 18mm F6.3
Construction
Aperture Blades
7 blades
9 blades
N/A
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Fixed focus lens, Prime lens, Pancake lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance 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, Sony E-mount
E-mount, X-mount, EF-M-mount, Micro Four Thirds
Material
Aluminum
Optical Formula | Elements
13 elements
6 elements
6 elements
Optical Formula | Groups
12 groups
5 groups
4 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
43 mm / 1.69 in
N/A
Size | Diameter
83 mm / 3.27 in
Size | Length
88 mm / 3.46 in
36 mm / 1.42 in
Weight
497 g / 17.56 oz
150 g / 5.30 oz
49 g
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
44.8° Diagonal | 37.8° Horizontal | 25.8° Vertical
74°
Aperture
f/1.8 ~ f/22
f/1.2 ~ f/16
F/6.3 fixed-aperture
Autofocus
No
No
Crop Factor
1.5
Focal Length
20 mm
35 mm
18 mm
Focal Length (35mm Equivalent)
52.5 mm
27 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
N/A
Weather Resistance
No
No
Performance
Max Magnification
1x
Min Focus Distance
200 mm / 7.87 in
350 mm / 13.78 in
Fixed focus
Production
Accessory
Lens hood included
Debut
2016-08-08
2017-12-11
2020-11
Made In
China
Reviews
Neofiliac score
59%
68%
Pros
- Rather affordable
- Bright maximum aperture
- Compact and lightweight
- Classic construction
- Can be used as a body cap
- Good contrast
- Good color rendition
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks weather sealing
- Okish build quality
- Not the best optical performance
- Not suitable for distant subjects
- Vignetting in video
- Fixed aperture
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