MTO-500A 550mm F/8.5
- Mount
- T MOUNT
- Focal Length
- 550mm
- Max Aperture
- F/8.5
- Type
- Mirror
- Brand
- MTO
T-mount mirror telephoto lens with a fixed 550mm focal length and maximum aperture of f/8.5, intended for distant subjects where long reach is needed. Mirror optics typically have a limited aperture and focus characteristics.
Last verified: 2026-04-27