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Compare Samyang 20mm F1.8 ED AS UMC vs Samyang 135mm F1.8 AF

Construction

Aperture Blades
7 blades
11 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Medium Telephoto 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
Sony E-mount
Motor
Stepper motor
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
1 Ultra-precision Aspherical element, two high-refractive index elements and three extra-low dispersion elements groups

Dimensions

Filter Diameter
77 mm / 3.03 in
82 mm / 3.23 in
Size | Diameter
83 mm / 3.27 in
93 mm / 3.66 in
Size | Length
88 mm / 3.46 in
130 mm / 5.12 in
Weight
497 g / 17.56 oz
772 g / 27.28 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
18.2° Diagonal | 15.2° Horizontal | 10.2° Vertical
Aperture
f/1.8 ~ f/22
f/1.8 ~ f/22
Autofocus
No
Yes
Focal Length
20 mm
135 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes
Zoom Type
Internal zoom

Performance

Max Magnification
0.243x
Min Focus Distance
200 mm / 7.87 in
690 mm / 27.17 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2022-01-28

Reviews

Neofiliac score
59%
70%
Pros
  • Rather affordable
  • Reasonably light
  • Weather-sealed
  • Improved build quality over previous Samyang / Rokinon offerings
  • Cheaper than the Sony GM
  • Reasonably compact for a 135mm
Cons
  • Lacks weather sealing
  • Not the highest grade of build
  • Quality is reflected in its approachable price

Price

Offers (incl. referral links)
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