Samyang MF 500 mm F8.0 Mirror Lens for Canon M - DSLR, CSC Telelens, Manual Focus Filter Diameter 72 mm, For Full Format and APS-C : Amazon.com.be: Electronics
Review Samyang MC Mirror Lens 1: 8.0 f = 500mm. Super telephoto lens weighing 300 grams | Happy
Samyang 500 mm F6.3 and 800 mm F8 mirror lenses - BirdGuides