Lens Database/MTO/N°182816
N°182816 · Family detail
MTOMirror·T MOUNT mount

MTO-500A 550mm F/8.5

Specifications01

MountT MOUNT
Focal length550mm
Max aperturef/8.5
TypeMirror · Telephoto · Prime
Weight1100 g
Filter size77 mm
Min focus distance4 m
Optical elements4
Groups3
AutofocusNo
StabilizationNo
Aperture controlNone
Lens hoodBuilt-in telescopic round
EraFilm era
Production statusDiscontinued

Additional Info02

Lens TypeSuper telephoto prime lens

Summary02

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.

AI-assisted summary — verify against linked sources

Specifications from thelensdb

Where can this lens be adapted?

The T-mount mount has a flange distance of 55 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

  • T-mount lenses fit each camera through a T-adapter made for that camera.
  • Sony EAdapter · 37 mm
  • Canon RFAdapter · 35 mm
  • Nikon ZAdapter · 39 mm
  • Fujifilm XAdapter · 37.3 mm
  • L-MountAdapter · 35 mm
  • Micro Four ThirdsAdapter · 35.75 mm
  • Fujifilm G (GFX)Adapter · 28.3 mm

    Covers full-frame: it can vignette on a medium format sensor.

  • Canon EF-MAdapter · 37 mm
  • Canon EFAdapter · 11 mm

    A rear element that sticks out can hit the camera mirror.

  • Nikon FAdapter · 8.5 mm

    A rear element that sticks out can hit the camera mirror.

Sources03

thelensdb.comVisit ↗

Other Mounts03

No alternate mounts are indexed for this family yet.