Samyang 21mm F/1.4 CS ED AS UMC

The Samyang 21mm F/1.4 CS ED AS UMC is a 21mm wide lens designed for the SONY E mount. Manufactured by an unspecified manufacturer, it offers a maximum aperture of f/1.4, covering a 21mm focal range, accepts 58 filters. Samyang 21mm F/1.4 CS ED AS UMC is one of 3 variants in its family on lens-database.com, with sibling versions across mounts including CANON EF-M, 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 2026-04-21. Source: manufacturer specifications.

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

The Samyang 21mm F/1.4 CS ED AS UMC is a 21mm wide lens for the SONY E 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 CS ED AS UMC use?

The Samyang 21mm F/1.4 CS ED AS UMC uses the SONY E mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/sony-e.

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

The Samyang 21mm F/1.4 CS ED AS UMC 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.

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

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/161209-samyang-21mm-f14-cs-ed-as-umc. Data is aggregated from manufacturer sources and updated continuously.