Compare Samyang 20mm F1.8 ED AS UMC vs Voigtlander 40mm F2 Ultron SL II vs Voigtlander Ultron 28mm F2
Variants
Type I
Type II
Construction
Aperture Blades
7 blades
9 blades
10 blades, straight cut
Colors
black
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Manual-focus prime lens for rangefinder cameras
Image Size
Full-Frame
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
Canon EF-mount, Nikon F-mount, Pentax K-mount
M-mount bayonet (VM)
Material
metal barrel, metal mount
Optical Formula | Elements
13 elements
6 elements
10 elements
Optical Formula | Groups
12 groups
5 groups
7 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 aspherical element1 high refraction glass element groups
Dimensions
Filter Diameter
77 mm / 3.03 in
52 mm / 2.05 in
39 mm
Size | Diameter
83 mm / 3.27 in
63 mm / 2.48 in
Size | Length
88 mm / 3.46 in
25 mm / 0.98 in
36 mm
Weight
497 g / 17.56 oz
200 g / 7.07 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
56.8° Diagonal | 48.5° Horizontal | 33.4° Vertical
74.51°
Aperture
f/1.8 ~ f/22
f/2 ~ f/22
f/2 ~ f/22
Autofocus
No
No
Focal Length
20 mm
40 mm
28 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.14x
Min Focus Distance
200 mm / 7.87 in
380 mm / 14.96 in
0.5 m (Rangefinder coupling ∞ ~ 0.7 m)
Production
Accessory
Lens hood included
Lens hood included
Lens hood LH-4N or LH-12, optional
Debut
2016-08-08
2007-11-02
2021
Made In
Japan
Japan
Reviews
Neofiliac score
59%
88%
Pros
- Rather affordable
- Compact and lightweight
- Rather good image quality
- Amazing build quality
- Very sharp
- Easy to focus
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks weather sealing
- Classic rendering not to everyone's taste
- Not to the standard of newer Voigtlander lenses
- Does not work well with thick filter stack
- Vignetting at f/2
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