Pentax-A 645 SMC 120mm F/4 Macro
The Pentax-A 645 SMC 120mm F/4 Macro is a 120mm macro lens designed for the PENTAX 645 mount and released in 1986. Manufactured by Pentax, it offers a maximum aperture of f/4, covering a 120mm focal range, weighs 695, accepts 67 filters. Pentax-A 645 SMC 120mm F/4 Macro 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 2026-07-26. Source: aggregated from cinelenswiki.
- Mount
- PENTAX 645
- Focal Length
- 120mm
- Max Aperture
- F/4
- Type
- Macro
- Year
- 1986
- Brand
- Pentax
What is the Pentax-A 645 SMC 120mm F/4 Macro?
The Pentax-A 645 SMC 120mm F/4 Macro is a 120mm macro lens for the PENTAX 645 mount with a maximum aperture of f/4. Full specifications and source attribution are available at lens-database.com.
What mount does the Pentax-A 645 SMC 120mm F/4 Macro use?
The Pentax-A 645 SMC 120mm F/4 Macro 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-A 645 SMC 120mm F/4 Macro?
The Pentax-A 645 SMC 120mm F/4 Macro 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 Pentax-A 645 SMC 120mm F/4 Macro released?
The Pentax-A 645 SMC 120mm F/4 Macro was released in 1986, placing it within the 1980s 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-A 645 SMC 120mm F/4 Macro?
Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/95517-pentax-a-645-smc-120mm-f4-macro. Data is aggregated from manufacturer sources and updated continuously.
The SMC Pentax-A 645 120mm f/4 Macro is a manual-focus macro lens introduced in the mid-1980s for the Pentax 645 medium format system. It delivers true 1:1 magnification without extension tubes, making it a standout for close-up, product, and nature photography. It also doubles as a sharp short telephoto for portraits and general use. It features a 9-element - 7-group optical design, Super Multi-Coating (SMC), and an 8-blade automatic diaphragm. The lens stops down to f/32, focuses as close as 39cm, and provides life-size reproduction. It uses a 67mm filter thread, weighs 695g, and measures 78.5 × 110mm. It includes an A setting on the aperture ring for full automation on compatible 645 bodies. A MH-RA 67 mm screw-in hood and S80-160 soft case were standard accessories.
Last verified: 2026-07-26