Sigma MF 500mm F/4.5 APO ZEN
The Sigma MF 500mm F/4.5 APO ZEN is a 500mm telephoto lens designed for the PENTAX K mount. Manufactured by an unspecified manufacturer, it offers a maximum aperture of f/4.5, covering a 500mm focal range. Sigma MF 500mm F/4.5 APO ZEN is one of 9 variants in its family on lens-database.com, with sibling versions across mounts including FUJIFILM X, KONICA AR, ROLLEI QBM, CANON FD, 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
- PENTAX K
- Focal Length
- 500mm
- Max Aperture
- F/4.5
- Type
- Telephoto
- Brand
- Unknown
What is the Sigma MF 500mm F/4.5 APO ZEN?
The Sigma MF 500mm F/4.5 APO ZEN is a 500mm telephoto lens for the PENTAX K 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 MF 500mm F/4.5 APO ZEN use?
The Sigma MF 500mm F/4.5 APO ZEN uses the PENTAX K mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/pentax-k.
What is the maximum aperture of the Sigma MF 500mm F/4.5 APO ZEN?
The Sigma MF 500mm F/4.5 APO ZEN 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 MF 500mm F/4.5 APO ZEN?
Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/110067-sigma-mf-500mm-f45-apo-zen. Data is aggregated from manufacturer sources and updated continuously.
Sigma 500mm f/4.5 APO ZEN is a Pentax K-mount prime telephoto lens designed for long-distance subjects such as sports, wildlife, and outdoor action. Fixed aperture is f/4.5.
Last verified: 2026-04-27