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Compare Samyang 20mm F1.8 ED AS UMC vs 7Artisans M28mm F1.4

Construction

Aperture Blades
7 blades
13 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Manual focus lens, Prime lens
Image Size
Full-Frame
Full frame
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
M-mount
Optical Formula | Elements
13 elements
11 elements
Optical Formula | Groups
12 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1x aspherical, 2x ED groups

Dimensions

Filter Diameter
77 mm / 3.03 in
52 mm
Size | Diameter
83 mm / 3.27 in
Size | Length
88 mm / 3.46 in
Weight
497 g / 17.56 oz
488 g

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
75°
Aperture
f/1.8 ~ f/22
F/1.4 ~ f/16
Autofocus
No
Focal Length
20 mm
28 mm
Focus Type
Internal
Image Stabilization
No
N/A
Weather Resistance
No

Performance

Min Focus Distance
200 mm / 7.87 in
70 cm

Production

Accessory
Lens hood included
Debut
2016-08-08
2018-11
Made In
China

Reviews

Neofiliac score
59%
Pros
  • Rather affordable
Cons
  • Lacks weather sealing
  • Not the highest grade of build

Price

Offers (incl. referral links)
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