$61.99 Commander Optics Super 500mm / 1000mm (with 2x Teleconverter) f/8 Manual Telephoto Lens for Canon Eos EF-S DSLR Cameras + T-Mount + Monopod \u0026 Lens Bag
420‑800mm F8.3-16 Manual Focusing Zoom 
JINTU White 420-800mm F/8.3-F16 Manual Focus Telephoto Zoom Lens Telescope +T2 Mount for Canon Full
![canon telescope lens](https://global.canon/en/quality/story/img/vol2-01.jpg "The reason behind the \")
![canon telescope lens](https://www.telescopeadapters.com/829-thickbox_default/canon-eos-r-mirrorless-deluxe-astrophotography-kit-125.jpg "Canon \")