Sigma MF 500mm F/8 Mirror Ultra-Telephoto

The Sigma MF 500mm F/8 Mirror Ultra-Telephoto is a 500mm mirror lens designed for the T MOUNT mount and released in 1967. Manufactured by Sigma[-XQ], it offers a maximum aperture of f/8, covering a 500mm focal range, weighs 1100. Sigma MF 500mm F/8 Mirror Ultra-Telephoto is one of 2 variants in its family on lens-database.com, with sibling versions across mounts including INTERCHANGEABLE MOUNT, 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 2026-06-11. Source: manufacturer specifications.

What is the Sigma MF 500mm F/8 Mirror Ultra-Telephoto?

The Sigma MF 500mm F/8 Mirror Ultra-Telephoto is a 500mm mirror lens for the T MOUNT mount with a maximum aperture of f/8. Full specifications and source attribution are available at lens-database.com.

What mount does the Sigma MF 500mm F/8 Mirror Ultra-Telephoto use?

The Sigma MF 500mm F/8 Mirror Ultra-Telephoto uses the T MOUNT mount. Lens-database.com indexes every lens currently catalogued for this mount at https://lens-database.com/mount/t-mount.

What is the maximum aperture of the Sigma MF 500mm F/8 Mirror Ultra-Telephoto?

The Sigma MF 500mm F/8 Mirror Ultra-Telephoto has a maximum aperture of f/8, 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.

When was the Sigma MF 500mm F/8 Mirror Ultra-Telephoto released?

The Sigma MF 500mm F/8 Mirror Ultra-Telephoto was released in 1967, 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 Sigma MF 500mm F/8 Mirror Ultra-Telephoto?

Full specifications, original source links, and family variants are listed at https://lens-database.com/lens/409452-sigma-mf-500mm-f8-mirror-ultra-telephoto. Data is aggregated from manufacturer sources and updated continuously.