Compare Samyang 16mm F2 ED AS UMC CS vs 7Artisans 25mm F1.8 vs 7Artisans 18mm F6.3
Construction
Aperture Blades
8 blades
7 blades
N/A
Colors
Black
Black
Form Factor
Wide-Angle Prime Lens
Normal Prime Lens
Fixed focus lens, Prime lens, Pancake lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-M-mount, Canon EF-mount, Micro Four Thirds-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
E-mount, X-mount, EF-M-mount, Micro Four Thirds
Material
Metal barrel, metal mount
Aluminum
Optical Formula | Elements
13 elements
7 elements
6 elements
Optical Formula | Groups
11 groups
5 groups
4 groups
Optical Formula | Special Glass
1 ED glass element, 1 aspheric element, 1 hybrid aspheric element groups
Dimensions
Filter Diameter
77 mm / 3.03 in
46 mm / 1.81 in
N/A
Size | Diameter
83 mm / 3.27 in
51 mm / 2.01 in
Size | Length
89 mm / 3.50 in
32 mm / 1.26 in
Weight
583 g / 20.60 oz
143 g / 5.05 oz
49 g
Function
Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
60.0° Diagonal | 51.3° Horizontal | 35.5° Vertical
74°
Aperture
f/2 ~ f/22
f/1.8 ~ f/22
F/6.3 fixed-aperture
Autofocus
No
No
Crop Factor
1.5
1.5
Focal Length
16 mm
25 mm
18 mm
Focal Length (35mm Equivalent)
24.0 mm
37.5 mm
27 mm
Focus Type
Internal
Image Stabilization
No
No
N/A
Weather Resistance
No
Performance
Max Magnification
1x
Min Focus Distance
200 mm / 7.87 in
180 mm / 7.09 in
Fixed focus
Production
Accessory
Lens hood included
Debut
2013-06-13
2017-06-28
2020-11
Made In
China
Reviews
Neofiliac score
50%
59%
Pros
- A bit large for an APS-C lens
- Short barrel
- Light in the hand
- Appears well-built
- Can be used as a body cap
- Good contrast
- Good color rendition
Cons
- Not the best grade of build
- Not the strongest IQ
- Lacks weather sealing
- Not the strongest in optical performance
- Not suitable for distant subjects
- Vignetting in video
- Fixed aperture
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