Samyang Sony E 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 Sony E mount. Its fast maximum aperture helps in dim light and gives good subject separation.
- APS-C (32mm equiv.)
- 52 Sony E 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
- 67.6 mm
- Diameter
- 73.6 mm
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 Sony E mount, so it fits Sony E 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 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.