Samyang Micro Four Thirds mount Ultra-wide prime
Samyang 21mm T1.5 ED AS UMC CS
Quick answer
The Samyang 21mm T1.5 ED AS UMC CS is a ultra-wide prime lens covering 21mm at f/1.5 for the Micro Four Thirds mount. Its fast maximum aperture helps in dim light and gives good subject separation.
- APS-C (32mm equiv.)
- 68 Micro Four Thirds cameras
- Focal
- 21mm
- Aperture
- f/1.5
- Filter
- 58mm
- Min focus
- 0.28m
- AF motor
- None
What 21mm sees
- APS-C crop 1.5× → 32mm
- 69° 59.5° horizontal
Diagonal angle of view. Frames drawn to scale at 21mm. Calculated from the focal length and crop factor, not measured.
Open the field-of-view calculatorSamyang 21mm T1.5 ED AS UMC CS specifications
Optics
- Focal length
- 21mm
- Maximum aperture
- f/1.5
- Format coverage
- APS-C
- Optical construction
- 8 elements in 7 groups
Focus
- Autofocus motor
- None
- Minimum focus distance
- 0.28 m
Physical
- Filter thread
- 58 mm
- Length
- 66.4 mm
- Diameter
- 73.6 mm
General
- Brand
- Samyang
- Mount
- Micro Four Thirds
- Lens type
- Prime
Specification source: lksamyang.com
What can you shoot with the Samyang 21mm T1.5 ED AS UMC CS?
At 21mm 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 21mm T1.5 ED AS UMC CS use?
It uses the Micro Four Thirds mount, so it fits Micro Four Thirds cameras directly.
What is the focal length of the Samyang 21mm T1.5 ED AS UMC CS?
It is a fixed 21mm lens with a maximum aperture of f/1.5. That makes it a ultra-wide lens.
Is the Samyang 21mm T1.5 ED AS UMC CS a prime or a zoom lens?
It is a prime lens with a fixed 21mm focal length. Primes usually open wider than zooms; this one opens to f/1.5.
What is the Samyang 21mm T1.5 ED AS UMC CS equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 32mm on full frame, with a 59.5° horizontal and 69° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Samyang 21mm T1.5 ED AS UMC CS 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.
Panasonic
Leica DG Vario-Summilux 10-25mm F1.7 Asph.
10-25mmf/1.7Micro Four Thirds
Olympus
M.Zuiko Digital ED 12-40mm F2.8 Pro
12-40mmf/2.8Micro Four Thirds
Panasonic
Lumix G X Vario 12-35mm F2.8 Asph. Power O.I.S.
12-35mmf/2.8Micro Four Thirds
Panasonic
Lumix G X Vario 12-35mm F2.8 II Asph. Power O.I.S.
12-35mmf/2.8Micro Four Thirds