Samyang 50mm F 1 4 AS UMC Análisis | 54 Datos comparados

The Samyang 50mm f/1.4 AS UMC is a well-constructed, manual-focus prime offering a fast aperture for £379, featuring a smooth, dampened focusing ring and excellent build quality. Notable pros include its balanced, durable design suitable for video, though it challenges the brand's budget-conscious reputation. Conversely, cons include the lack of electronic coupling, which forces manual stop-down metering and limits focus confirmation on many DSLRs. Consequently, users must heavily rely on Live View to achieve accurate focus, particularly on older camera bodies.

The Samyang 50 mm f/1.4 AS UMC is a manual-focus standard prime lens released to compete with premium 50mm glass from Zeiss, Sony, and Sigma. According to the comprehensive LensTip review, the lens offers exceptional center sharpness and excellent contrast across all apertures. It stands out for its solid build quality, featuring a smooth, well-damped focus ring with a precise 160-degree throw, while also maintaining highly controlled astigmatism and chromatic aberrations. Despite missing electronic communication contacts on certain configurations like the Canon mount—which removes focus confirmation—it delivers higher value-for-money optical performance in its primary testing categories than several autofocus equivalents in its price tier. However, the lens falls short in several distinct optical areas when pushed to its limits. LensTip notes that image sharpness is noticeably softer when shooting wide open at the maximum f/1.4 aperture. Additionally, the optical profile exhibits unbecomingly high barrel distortion exceeding 2% on full-frame sensors alongside heavy vignetting. The lens struggles significantly when shooting against bright light, suffering from large flare artifacts and severe contrast loss. While coma is handled well on cropped APS-C sensors,...

Dustin Abbott’s review of the Rokinon 50mm f/1.4 AS IF UMC highlights a lens delivering exceptionally strong image quality, featuring sharp resolution at f/1.4 and beautiful bokeh from a 9-bladed aperture. Pros include robust physical construction with a smooth, well-damped manual focus ring, making it an excellent, well-controlled tool for portraits. Conversely, the manual-only, non-chipped design lacks autofocus and EXIF data, which poses a disadvantage given its price point compared to autofocusing competitors. Additional cons include noticeable chromatic aberrations and potential metering inconsistencies, despite the lens's overall strong performance.