Auto Tamron 21mm F/4.5

The Auto Tamron 21mm F/4.5 is a 21mm wide lens designed for the TAMRON ADAPTALL mount and released in 1970. Manufactured by Tamron, it offers a maximum aperture of f/4.5, covering a 21mm focal range, weighs 332, accepts 82 filters. Auto Tamron 21mm F/4.5 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 2026-04-27. Source: manufacturer specifications.

What is the Auto Tamron 21mm F/4.5?

The Auto Tamron 21mm F/4.5 is a 21mm wide lens for the TAMRON ADAPTALL mount with a maximum aperture of f/4.5. Full specifications and source attribution are available at lens-database.com.

What mount does the Auto Tamron 21mm F/4.5 use?

The Auto Tamron 21mm F/4.5 uses the TAMRON ADAPTALL mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/tamron-adaptall.

What is the maximum aperture of the Auto Tamron 21mm F/4.5?

The Auto Tamron 21mm F/4.5 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 Auto Tamron 21mm F/4.5 released?

The Auto Tamron 21mm F/4.5 was released in 1970, placing it within the 1970s 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 Auto Tamron 21mm F/4.5?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/106701-auto-tamron-21mm-f45. Data is aggregated from manufacturer sources and updated continuously.