Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II

The Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II is a 18mm wide lens designed for the KONICA AR mount. Manufactured by an unspecified manufacturer, it offers a maximum aperture of f/2.8, covering a 18mm focal range. Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II is one of 9 variants in its family on lens-database.com, with sibling versions across mounts including MINOLTA SR, CONTAX/YASHICA, CANON FD, 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 Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II?

The Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II is a 18mm wide lens for the KONICA AR mount with a maximum aperture of f/2.8. Full specifications and source attribution are available at lens-database.com.

What mount does the Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II use?

The Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II uses the KONICA AR mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/konica-ar.

What is the maximum aperture of the Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II?

The Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II has a maximum aperture of f/2.8, a standard pro-grade aperture. 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 Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated II?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/99201-sigma-mf-ultra-wide-18mm-f28-multi-coated-ii. Data is aggregated from manufacturer sources and updated continuously.