Asahi Bellows-Takumar 100mm F/4

The Asahi Bellows-Takumar 100mm F/4 is a 100mm macro lens designed for the M42 mount and released in 1964. Manufactured by Pentax, it offers a maximum aperture of f/4, covering a 100mm focal range, weighs 142, accepts 49 filters. Asahi Bellows-Takumar 100mm F/4 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 Asahi Bellows-Takumar 100mm F/4?

The Asahi Bellows-Takumar 100mm F/4 is a 100mm macro lens for the M42 mount with a maximum aperture of f/4. Full specifications and source attribution are available at lens-database.com.

What mount does the Asahi Bellows-Takumar 100mm F/4 use?

The Asahi Bellows-Takumar 100mm F/4 uses the M42 mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/m42.

What is the maximum aperture of the Asahi Bellows-Takumar 100mm F/4?

The Asahi Bellows-Takumar 100mm F/4 has a maximum aperture of f/4, 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 Asahi Bellows-Takumar 100mm F/4 released?

The Asahi Bellows-Takumar 100mm F/4 was released in 1964, placing it within the 1960s 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 Asahi Bellows-Takumar 100mm F/4?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/94022-asahi-bellows-takumar-100mm-f4. Data is aggregated from manufacturer sources and updated continuously.