Samyang Micro Four Thirds 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 Micro Four Thirds mount. Its fast maximum aperture helps in dim light and gives good subject separation.
- Micro Four Thirds (40mm equiv.)
- 68 Micro Four Thirds cameras
- Focal
- 20mm
- Aperture
- f/1.8
- Weight
- 520g
- Filter
- 77mm
- Min focus
- 0.2m
- AF motor
- None
What 20mm sees
- Micro Four Thirds crop 2.0× → 40mm
- 56.8° 48.5° 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
- 520 g
- Length
- 113.2 mm
- Diameter
- 83 mm
General
- Brand
- Samyang
- Mount
- Micro Four Thirds
- Lens type
- Prime
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 Micro Four Thirds mount, so it fits Micro Four Thirds 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 Micro Four Thirds (2x crop) it frames like 40mm on full frame, with a 48.5° horizontal and 56.8° 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 Micro Four Thirds-mount camera, including OM System OM-1, OM System OM-1 Mark II, OM System OM-5, Olympus OM-D E-M1, and Olympus OM-D E-M1 Mark II and 63 more.
Alternatives for Micro Four Thirds from other brands
All Micro Four Thirds lensesSame mount, overlapping focal range, closest maximum aperture first.
