Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR

The Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR is a 28-45mm zoom lens designed for the PENTAX 645 mount and released in 2014. Manufactured by Pentax, it offers a maximum aperture of f/4.5, covering a 28-45mm focal range, weighs 1470, accepts 82 filters. Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR 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 2026-04-28. Source: AI-assisted summary, verify against linked manufacturer sources.

What is the Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR?

The Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR is a 28-45mm zoom lens for the PENTAX 645 mount with a maximum aperture of f/4.5. Full specifications and source attribution are available at lens-database.com.

What mount does the Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR use?

The Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR uses the PENTAX 645 mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/pentax-645.

What is the maximum aperture of the Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR?

The Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR has a maximum aperture of f/4.5, a slower-aperture design typical of zoom or specialty optics. Aperture is one of the cross-referenced fields used by lens-database.com to compare equivalent optics across mounts and eras.

When was the Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR released?

The Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR was released in 2014, 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 Pentax HD PENTAX-DA645 28-45mm F/4.5 ED AW SR?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/969704-pentax-hd-pentax-da645-28-45mm-f45-ed-aw-sr. Data is aggregated from manufacturer sources and updated continuously.