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Compare Samyang 20mm F1.8 ED AS UMC vs Voigtlander 21mm F1.8 Ultron

Construction

Aperture Blades
7 blades
10 blades
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
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
Leica M-mount
Material
Metal barrel, metal mount
Optical Formula | Elements
13 elements
13 elements
Optical Formula | Groups
12 groups
11 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Aspherical element groups

Dimensions

Filter Diameter
77 mm / 3.03 in
58 mm / 2.28 in
Size | Diameter
83 mm / 3.27 in
62 mm / 2.44 in
Size | Length
88 mm / 3.46 in
92 mm / 3.62 in
Weight
497 g / 17.56 oz
412 g / 14.56 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
Aperture
f/1.8 ~ f/22
f/1.8 ~ f/22
Autofocus
No
No
Focal Length
20 mm
21 mm
Focus Type
Internal
Image Stabilization
No
Weather Resistance
No

Performance

Min Focus Distance
200 mm / 7.87 in
500 mm / 19.69 in

Production

Accessory
Lens hood included
Lens Hood: Non-detachable hood (supplied)
Debut
2016-08-08
2012-09-17
Made In
Japan

Reviews

Neofiliac score
59%
88%
Pros
  • Rather affordable
  • Solid all-metal construction
  • Very sharp
  • Great sunstar
  • Quite bright aperture
Cons
  • Lacks weather sealing
  • Not the highest grade of build

Price

Offers (incl. referral links)
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