Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS

The Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS is a 21mm wide lens designed for the CANON EF-M mount and released in 2015. Manufactured by Samyang, it offers a maximum aperture of f/1.4, covering a 21mm focal range, weighs 275. Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS is one of 4 variants in its family on lens-database.com, with sibling versions across mounts including MICRO 4/3, SONY E, FUJIFILM X, making cross-mount comparison straightforward for buyers and researchers alike.

This lens record is part of the open public catalog at lens-database.com — a free, continuously updated database indexing 23,885+ photographic and cinematographic lenses with cross-referenced specifications. Data is aggregated from manufacturer datasheets and authoritative public sources, then normalized so lenses across vendors and eras can be compared on common terms. Released under CC BY 4.0, the specifications shown here may be quoted, cited, or reproduced with attribution to lens-database.com.

Last verified 2026-06-11. Source: manufacturer specifications.

What is the Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS?

The Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS is a 21mm wide lens for the CANON EF-M mount with a maximum aperture of f/1.4. Full specifications and source attribution are available at lens-database.com.

What mount does the Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS use?

The Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS uses the CANON EF-M mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/canon-ef-m.

What is the maximum aperture of the Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS?

The Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS has a maximum aperture of f/1.4, placing it in the ultra-fast lens category. Aperture is one of the cross-referenced fields used by lens-database.com to compare equivalent optics across mounts and eras.

When was the Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS released?

The Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS was released in 2015, placing it within the 2010s generation of lens designs catalogued at lens-database.com. Year of introduction is one of the indexed fields used by lens-database.com to track design lineage and family variants.

Where can I find specifications for the Samyang 21mm F/1.4 ED AS UMC CS / Rokinon 21mm F/1.4 ED AS UMC CS?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/88634-samyang-21mm-f14-ed-as-umc-cs-rokinon-21mm-f14-ed-as-umc-cs. Data is aggregated from manufacturer sources and updated continuously.