Sigma APO 500mm F/4.5
The Sigma APO 500mm F/4.5 is a 500mm telephoto lens designed for the OLYMPUS OM mount. Manufactured by an unspecified manufacturer, it offers a maximum aperture of f/4.5, covering a 500mm focal range. Sigma APO 500mm F/4.5 is one of 10 variants in its family on lens-database.com, with sibling versions across mounts including MINOLTA SR, PENTAX K, NIKON F, MINOLTA MD, making cross-mount comparison straightforward for buyers and researchers alike.
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.
- Mount
- OLYMPUS OM
- Focal Length
- 500mm
- Max Aperture
- F/4.5
- Type
- Telephoto
- Brand
- Unknown
What is the Sigma APO 500mm F/4.5?
The Sigma APO 500mm F/4.5 is a 500mm telephoto lens for the OLYMPUS OM mount with a maximum aperture of f/4.5. Full specifications and source attribution are available at lens-database.com.
What mount does the Sigma APO 500mm F/4.5 use?
The Sigma APO 500mm F/4.5 uses the OLYMPUS OM mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/olympus-om.
What is the maximum aperture of the Sigma APO 500mm F/4.5?
The Sigma APO 500mm 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.
Where can I find specifications for the Sigma APO 500mm F/4.5?
Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/110077-sigma-apo-500mm-f45. Data is aggregated from manufacturer sources and updated continuously.
Sigma APO 500mm F/4.5 is a prime telephoto lens for the Olympus OM mount. It has a fixed wide-aperture of f/4.5 suitable for subject isolation and low-light telephoto work.
Last verified: 2026-04-27