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MTO-500
| Name Manufacturer / Model | Mount Bayonet | Type Category | Year Released | Focal mm | Aperture f/ | Weight g |
|---|---|---|---|---|---|---|
MTO-500500mm F/8 | M39 | Mirror | — | 500mm | f/8 | — |
MTO-500500mm F/8 | M42 | Mirror | — | 500mm | f/8 | — |
MTO-500500mm F/8.0 | M39 | Mirror | — | 500mm | f/8 | — |
MTO-500500mm F/8.0 | M42 | Mirror | — | 500mm | f/8 | — |