Samyang 20mm T1.9 ED AS UMC


Explore Your Wideness

Samyang 20mm T1.9 ED AS UMC is a wide angle manual focus cine lenses for DSLR cameras with full frame sensor size. The flow of light is devised based on the uniqueness of the distance from glass to sensor in mirrorless cameras to create optimal performance.

The bright T1.9 aperture secures a fast shutter speed even under the restricted lighting conditions to offer best quality images. It will brighten up your everyday snapshots. Also it creates an outstanding out-of-focus look by highlighting the main object effectively. In between ultra-wide 16mm and wide-standard 24mm, 20mm lens is a perfect fit to explore wide angles not only for shooting indoor images such as concerts and interior photos but also street snaps. The 0.2m of minimum focusing adds versatility to the lens.

Based on Samyang Optics’ exceptional optical technology, Ultra Multi Coating and two aspherical lenses and three extra-low dispersion have been included among 13 glasses in 12 groups to minimize aberration and unnecessary light dispersion, delivering high resolution from the center to the corners of the image.

Specifically, the Samyang 20mm T1.9 ED AS UMC is a cine lens optimally designed for professional follow focus system, thanks to the quiet and smooth de-clicked focus and aperture gear rings. Also, the distance scale and T numbers are marked on both sides of the lens for convenience when filming.



Aperture Range T1.9 ~ 22
13 Elements in 12 groups (2 Aspherical Lens)
Focusing Distance
0.2m (0.65ft)
Filter Size 77.0mm
Maximum Diameter 83.0mm
Mount Nikon F Canon EF
Pentax K
Sony A
Canon M
Fuji X
Samsung NX
Sony E
Micro Four-Thirds
Angle Of View 35mm 94.8˚ 94.8˚ 94.8˚ 94.8˚ - - - 94.8˚ -
APS-C 66.9˚ 70.3˚ 70.3˚ 70.3˚ 66.9˚ 70.3˚ 70.3˚ 70.3˚ -
- - - - - - - - 56.1˚
Length(mm) 85.9mm 88.4mm 86.9mm 87.9mm 114.3mm 114.7mm 106.9mm 114.4mm 113.2mm
Weight(g) 508g 518g 513g 518g 546g 586g 536g 546g 541g
Gear Module 0.8mm
A 7mm
B 4mm
C 43.8mm
D 8mm 10.5mm 9mm 10mm 36.4mm 36.8mm 29mm 36.5mm 35.3mm
Focus Ring Diameter 81.6mm
Aperture Ring Diameter 70.4mm 73.6mm