Samyang 50mm F1.4 AS UMC Lens - Micro Four Thirds Mount

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The Samyang 50mm F1.4 AS UMC Lens is a standard focal length prime lens, with full frame and smaller sized sensor compatibility.

Offering a 46.2 degrees (full frame) field of view with a fast aperture of f/1.4, the 50mm is superb for low light shooting and shallow depth of field photography where separation of the subject from the background is desired and beautiful bokeh with a circular aperture with 8 blades.

Optics of the lens consists of nine lens elements arranged in six groups (including one aspherical and one hybrid aspherical lens element). The Hybrid glass aspherical lens (H-ASP) minimises colour aberration to produce exceptional image quality and high contrast for throughout the image, from centre to the corners, even for wide apertures. The aspherical element (ASP) further helps to produce the highest resolution and sharpness throughout the image. To ensure high contrast and faithful colour reproduction, all lens elements have been covered with Samyang's multi-layered UMC anti-reflective coatings.

  • Glass aspherical lenses (AS)
  • 8 circular aperture blades
  • Ultra Multi Coating (UMC)
  • F1.4 wide apertures


Glass aspherical lenses
The adaption glass aspherical lenses reproduce aberration to get high quality image in centre and edge of frame and excellent contrast.

8 circular aperture blades
This lens is designed to have 8 circular aperture blades to render beautiful buttery bokeh.

Ultra Multi Coating (UMC)
Samyang applies the UMC (Ultra Multi Coating) of their own technology to reduce flare and ghost as much as possible and get clear and fresh colour image.

F1.4 wide aperture
Smooth focal control gives you precise adjustment and also F1.4 wide aperture gives you touching photography.


Manufacturer Samyang Optics
Model Samyang 50mm F1.4 AS UMC
Lens type Standard prime for full frame or cropped sensors
Focal length 50mm (100mm for MFT)
Maximum aperture f1.4
Min aperture f22
Angle of view 46.2° (Full Frame), 30.8° (APS-C), 
23.6° (MFT)
Min focusing distance 0.45m
No. of diaphragm blades 8
Focus type MF (Manual Focus only)
Lens construction 9 element, 6 groups (1 Aspheric element)
Dimensions 81.4mm diameter
Weight 575g (approx. dependant on mount)
Lens hood Detachable, included
Filter size 77mm