Samyang's manual fast 135mm — the f/2 ED UMC for Canon EF portrait and astrophotography.
The Samyang 135mm f/2 ED UMC is a manual-focus telephoto prime from Samyang for Canon EF mount, featuring extra-low dispersion (ED) glass elements and Ultra Multi-Coating (UMC) to address chromatic aberration and flare. It competes directly with Canon's own EF 135mm f/2L USM at a significantly lower price point.
The lens delivers 135mm at f/2 maximum aperture in a fully manual focus configuration, with ED glass elements providing chromatic aberration suppression, UMC coating for flare and ghosting reduction, and full-frame coverage. No electronic contacts are present, so no EXIF or focus confirmation is communicated to the camera.
The 135mm f/2 focal length combines natural telephoto compression with a fast aperture that produces strong subject isolation — a combination prized for portrait, documentary, and event photography. Samyang's ED/UMC formula delivers optical quality that rivals Canon's L variant in sharpness, at a significant price advantage, and is particularly well-regarded at its price point.
Inspect the focus ring for smooth, precise movement across the full focus range. Check aperture blades for clean, oil-free operation. Verify infinity focus accuracy against a distant subject, as manual-only lenses should be checked for correct infinity calibration on the intended camera body. Examine the front element for coating abrasion.