Samyang 500mm f/6.3 .... got this bad boi in the mail yesterday was pretty stoked to test it out... probably gonna get a ND filter for this guy next using a 92mm
Rokinon High Definition 500mm F/6.3 Telephoto Lens Kit | eBay
500mm F/6.3 Camera Telephoto Manual Mirror Lens+2X Teleconverter Lens for Canon Nikon Pentax Olympus Sony A6300 A7RII GH5 DSLR
Bower High-Power 500mm f/6.3 Telephoto Mirror Lens (SLY50063) : Digital Slr Camera Lenses : Electronics - Amazon.com
Opteka 500mm f/6.3 (with 2x- 1000mm) Telephoto Mirror Lens for Digital
First test with my Samyang 500mm MC IF F6.3 Mirror Lens. Shot with Canon EOS 7D. - YouTube
Amazon.com : JINTU 500mm F6.3 MF Mirror Telephoto Lens Compatible with Canon EOS E Mount Digital SLR Cameras 4000D 2000D 200D 250D 5D IV 90D 60D 70D 77D 80D 850D 650D 750D
Samyang Mirror Lens 500 mm 1:6.3 DX. Comparison with Rubinar 500/5.6. Review of the mirror-lens lens by Rodion Eshmakov | Happy
Samyang Mirror Lens 500 mm 1:6.3 DX. Comparison with Rubinar 500/5.6. Review of the mirror-lens lens by Rodion Eshmakov | Happy
500mm F/6.3 Mf Telephoto Mirror Lens +2x Teleconverter =1000mm For Nikon Canon Sony Dslr Camera And Macro 4/3 Mirroreless Camera - Camera Lenses - AliExpress