Lens Lab
Samyang 50mm F1.4 AS UMC / Rokinon 50mm F1.4 AS IF UMC
50mm · f/1.4
Overview
The Samyang 50mm F1.4 AS UMC / Rokinon 50mm F1.4 AS IF UMC offers excellent optical performance for its price, with sharpness that rivals or exceeds more expensive lenses like the Canon 50mm f/1.2L and Sigma 50mm Art. Center sharpness is good at f/1.4 and becomes excellent by f/2, with strong performance across the frame by f/4. Weaknesses include noticeable distortion, vignetting, and chromatic aberration in high-contrast edges. Build quality is very good with smooth manual focus damping, but the lens lacks autofocus and electronic contacts, requiring stop-down metering and live view for accurate focus on some cameras. It suits videographers and photographers comfortable with manual focus who prioritize image quality over convenience.