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Compare Samyang 20mm F1.8 ED AS UMC vs Zeiss Planar T* 1.4/85

Construction

Aperture Blades
7 blades
9 blades, 1/2 stop steps. ZE (Canon) version has no aperture ring.
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto 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
Canon EF-mount, Nikon F-mount, Pentax K-mount
Optical Formula | Elements
13 elements
6 elements
Optical Formula | Groups
12 groups
5 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups

Dimensions

Filter Diameter
77 mm / 3.03 in
72 mm / 2.83 in
Size | Diameter
83 mm / 3.27 in
78 mm / 3.07 in
Size | Length
88 mm / 3.46 in
85 mm / 3.35 in
Weight
497 g / 17.56 oz
700 g / 24.73 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
28.6° Diagonal | 23.9° Horizontal | 16.1° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/16
Autofocus
No
No
Focal Length
20 mm
85 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No

Performance

Max Magnification
0.1
Min Focus Distance
200 mm / 7.87 in
1000 mm / 39.37 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2016-08-08

Reviews

Neofiliac score
59%
93%
Pros
  • Rather affordable
  • Bright maximum aperture
  • F-mount with physical aperture ring
Cons
  • Lacks weather sealing
  • Not the highest grade of build
  • Classic rendering not to everyone's taste

Price

Offers (incl. referral links)
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