✅ [SINCE 1949] Praktica, launching optical products for over 70 years. Customer support in the UK. 🖼️[PHOTOGRAPHY] Take photographs at long range by attaching the Praktica T Ring Adapter to your Canon SLR camera and spotting scope/telescope. Your spotting scope/telescope will effectively become a powerful telephoto lens for your camera. 📸[COMPATIBILITY] Works with all Canon EOS EF system cameras including 1D, 1Ds, 5D, 5DS, 6D, 10D, D30, 90D, 100D, 250D, 850D, 2000D, 4000D, R6, R7, R10, R50 and many more. It is not compatible with Canon EOS-M models (search for product code B07F2K3L93 for compatibility with EOS-M). ❗[REQUIRED] A Digiscoping Adapter Tube is required to attach to a Spotting Scope/Telescope (search for Praktica product codes B003UBHPWC or B074THG2HC for attaching to a Spotting Scope). 💯 [CONNECTION] This lens adapter is designed to fit securely to the lens thread on your camera, yet it can still be removed easily when not needed. The sturdy bayonet flange locks in place just like a lens, providing secure contact between your camera and spotting scope/telescope. 🌌 [ASTRONOMY] Perfect for shooting pictures of terrestrial or celestial scenes, also birdwatching & wildlife. ⚠️ [NOTE] Before use it is necessary to turn off the automatic focus function of the DSLR and obtain the image by adjusting the focus knob on the spotting scope or telescope. 💪[MATERIAL] High quality steel construction