Ricoh XR Rikenon 28mm F/3.5 Aspheric

The Ricoh XR Rikenon 28mm F/3.5 Aspheric is a 28mm wide lens designed for the PENTAX K mount and released in 1996. Manufactured by Ricoh, it offers a maximum aperture of f/3.5, covering a 28mm focal range, weighs 55, accepts 52 filters. Ricoh XR Rikenon 28mm F/3.5 Aspheric is catalogued on lens-database.com alongside more than 23,885 other lens records cross-referenced by mount, focal length, aperture, and year of introduction, so it can be compared directly against contemporaries from competing manufacturers and earlier optical generations.

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 Ricoh XR Rikenon 28mm F/3.5 Aspheric?

The Ricoh XR Rikenon 28mm F/3.5 Aspheric is a 28mm wide lens for the PENTAX K mount with a maximum aperture of f/3.5. Full specifications and source attribution are available at lens-database.com.

What mount does the Ricoh XR Rikenon 28mm F/3.5 Aspheric use?

The Ricoh XR Rikenon 28mm F/3.5 Aspheric uses the PENTAX K mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/pentax-k.

What is the maximum aperture of the Ricoh XR Rikenon 28mm F/3.5 Aspheric?

The Ricoh XR Rikenon 28mm F/3.5 Aspheric has a maximum aperture of f/3.5, a moderate-aperture design. Aperture is one of the cross-referenced fields used by lens-database.com to compare equivalent optics across mounts and eras.

When was the Ricoh XR Rikenon 28mm F/3.5 Aspheric released?

The Ricoh XR Rikenon 28mm F/3.5 Aspheric was released in 1996, placing it within the 1990s 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 Ricoh XR Rikenon 28mm F/3.5 Aspheric?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/107962-ricoh-xr-rikenon-28mm-f35-aspheric. Data is aggregated from manufacturer sources and updated continuously.