Pentax-A 645 SMC 200mm F/4
The Pentax-A 645 SMC 200mm F/4 is a 200mm telephoto lens designed for the PENTAX 645 mount and released in 1985. Manufactured by Pentax, it offers a maximum aperture of f/4, covering a 200mm focal range, weighs 570, accepts 58 filters. Pentax-A 645 SMC 200mm 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 2026-07-26. Source: aggregated from cinelenswiki.
- Mount
- PENTAX 645
- Focal Length
- 200mm
- Max Aperture
- F/4
- Type
- Telephoto
- Year
- 1985
- Brand
- Pentax
What is the Pentax-A 645 SMC 200mm F/4?
The Pentax-A 645 SMC 200mm F/4 is a 200mm telephoto 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 200mm F/4 use?
The Pentax-A 645 SMC 200mm F/4 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 200mm F/4?
The Pentax-A 645 SMC 200mm 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 Pentax-A 645 SMC 200mm F/4 released?
The Pentax-A 645 SMC 200mm F/4 was released in 1985, 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 200mm F/4?
Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/105587-pentax-a-645-smc-200mm-f4. Data is aggregated from manufacturer sources and updated continuously.
The SMC Pentax-A 645 200mm f/4 is a manual-focus telephoto prime introduced in the mid-1980s for the Pentax 645 medium format system. With a 35mm equivalent focal length of approximately 124mm, it was designed as a lightweight, affordable option for portraiture, landscape, and compressed-perspective work—slotting in between the more common 150mm and 300mm lenses in the lineup. Optically, it features a 4-element - 4-group design with Super Multi-Coating (SMC) and an 8-blade automatic diaphragm. The lens stops down to f/32, focuses as close as 2 meters, and delivers a 0.13× magnification ratio. It uses a 58mm filter thread, weighs 570g, and measures 74 × 116mm. It includes a built-in sliding hood, a manual aperture ring with “A” setting, and was typically sold with the S80-160 soft case. It lacks internal focusing, weather sealing, or autofocus, but is fully compatible with all Pentax 645 film and digital bodies.
Last verified: 2026-07-26