Samyang Sony E mount Ultra-wide prime
Samyang 20mm f/1.8 ED AS UMC
Quick answer
The Samyang 20mm f/1.8 ED AS UMC is a ultra-wide prime lens covering 20mm at f/1.8 for the Sony E mount. Its fast maximum aperture helps in dim light and gives good subject separation.
- Full frame
- APS-C (30mm equiv.)
- 52 Sony E cameras
- Focal
- 20mm
- Aperture
- f/1.8
- Weight
- 525g
- Filter
- 77mm
- Min focus
- 0.2m
- AF motor
- None
What 20mm sees
- Full frame crop 1.0×
- 94.5° 84° horizontal
- APS-C crop 1.5× → 30mm
- 71.6° 61.9° horizontal
Diagonal angle of view. Frames drawn to scale at 20mm. Calculated from the focal length and crop factor, not measured.
Open the field-of-view calculatorSamyang 20mm f/1.8 ED AS UMC specifications
Optics
- Focal length
- 20mm
- Maximum aperture
- f/1.8
- Format coverage
- Full frame
- Optical construction
- 13 elements in 12 groups
Focus
- Autofocus motor
- None
- Minimum focus distance
- 0.2 m
Physical
- Filter thread
- 77 mm
- Weight
- 525 g
- Length
- 114.4 mm
- Diameter
- 83 mm
Specification source: lksamyang.com
What can you shoot with the Samyang 20mm f/1.8 ED AS UMC?
At 20mm this is a ultra-wide prime, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
Its fast maximum aperture helps in dim light and gives good subject separation.
Frequently asked questions
What mount does the Samyang 20mm f/1.8 ED AS UMC use?
It uses the Sony E mount, so it fits Sony E cameras directly.
What is the focal length of the Samyang 20mm f/1.8 ED AS UMC?
It is a fixed 20mm lens with a maximum aperture of f/1.8. That makes it a ultra-wide lens.
Is the Samyang 20mm f/1.8 ED AS UMC a prime or a zoom lens?
It is a prime lens with a fixed 20mm focal length. Primes usually open wider than zooms; this one opens to f/1.8.
What is the Samyang 20mm f/1.8 ED AS UMC equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 30mm on full frame, with a 61.9° horizontal and 71.6° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Samyang 20mm f/1.8 ED AS UMC fit?
Any Sony E-mount camera, including Sony A1, Sony A3000, Sony A5000, Sony A5100, and Sony A6000 and 47 more.
Alternatives for Sony E from other brands
All Sony E lensesSame mount, overlapping focal range, closest maximum aperture first.
