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Compare Samyang 20mm F1.8 ED AS UMC vs Sony 50mm F2.5 G

Construction

Aperture Blades
7 blades
7 blades
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
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
Material
Aluminum alloy
Motor
Linear Motor
Optical Formula | Elements
13 elements
9 elements
Optical Formula | Groups
12 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 ED and 2 aspherical elements groups

Dimensions

Filter Diameter
77 mm / 3.03 in
49 mm / 1.93 in
Size | Diameter
83 mm / 3.27 in
68 mm / 2.68 in
Size | Length
88 mm / 3.46 in
45 mm / 1.77 in
Weight
497 g / 17.56 oz
174 g / 6.15 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/22
f/2.5 ~ f/22
Autofocus
No
Yes
Focal Length
20 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes

Performance

Max Magnification
0.21x
Min Focus Distance
200 mm / 7.87 in
310 mm / 12.20 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2021-03-23
Model Name
SEL50F25G

Reviews

Neofiliac score
59%
95%
Pros
  • Rather affordable
  • Compact and lightweight
  • Weather-sealed
  • Comes with physical aperture ring
  • High contrast
Cons
  • Lacks weather sealing
  • Not the highest grade of build
  • Focus breathing
  • Relatively small f/1.8 aperture

Price

Offers (incl. referral links)
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