![M39 Mount MTO 500mm F/8 Mirror Lens "Grand Prix Brussels 1958" with Lens Cap, Lens Hood, Four Filters, Nikon F Mount Adapter, and Wooden Box — F Stop Cameras M39 Mount MTO 500mm F/8 Mirror Lens "Grand Prix Brussels 1958" with Lens Cap, Lens Hood, Four Filters, Nikon F Mount Adapter, and Wooden Box — F Stop Cameras](https://images.squarespace-cdn.com/content/v1/54e3cdb3e4b0b56fcc45e9e2/1628793526661-5SSBMJ56US6P3FNGIQB7/film+camera+for+sale+august+2021-93.jpg?format=2500w)
M39 Mount MTO 500mm F/8 Mirror Lens "Grand Prix Brussels 1958" with Lens Cap, Lens Hood, Four Filters, Nikon F Mount Adapter, and Wooden Box — F Stop Cameras
Moon shot with Soviet mirror lens: 500mm f8, MC 3M-5CA: Astrophotography Talk Forum Forum: Digital Photography Review
![MTO500 / 3M-5A / 3M-5CA / ZM-5A maksutov mirror 500mm F8 Lens Reviews - Russian and Zenitar Lenses - Pentax Lens Review Database MTO500 / 3M-5A / 3M-5CA / ZM-5A maksutov mirror 500mm F8 Lens Reviews - Russian and Zenitar Lenses - Pentax Lens Review Database](https://www.pentaxforums.com/userreviews/data/83/3M-5A-MC_500mm-1.jpg)