Compatible with Canon EOS and Rebel SLR and DSLR Cameras and only compatible with Canon DSLR camera of EF mount; Note: it doesn't fit for EOS-M models;connect camera to telescope for direct;prime focus; photography convenient and easily Super easy to use;thread t adapter into t ring adapter;then thread the whole mount adapter into cameras to connect to telescope Universal t adapter fits all standard 1.25" diameter telescope microscope etc;t ring adapter is compatible for all standard 1.25" lenses of cameras;but not for SV13 spotting scope Metal materials and tight;non binding fit;solid and durable for long term use Manual focusing;some short-focus camera or telescope's optical tube may not be able to focus quickly;so it's great for you use an additional extension tube SVBONY 1.25" camera T adapter and T2 T-ring M42 x 0.75 compatible with Canon EOS camera and astronomical telescope The SVBONY telescope camera adapter help you keep the beautiful and interesting view of your telescope or microscope easily You can attach your camera to your telescope conveniently since using this adapter combination You can share with your friend or family through the camera screen, pictures and video is available Features: 1.25" diameter T-adapter: Fits all standard 1.25" telescopes T2 T-ring adapter: Compatible with Canon EOS camera useful accessory allows you to attach your camera to a telescope;camera adapter;and other astrophotography accessories Usage: Thread T-adapter into T-ring adapter;then thread the whole mount adapter into compatible with Nikon DSLR/SLR to connect to telescope Durable metal materials: Versatile and sturdy;one time purchase for long-term use The ring adapter can’t auto focusing : The adapter ring has no electrical connection and diaphragm and amp;focusing are required to be set by manual T-thread interface: Ring Campatible with Canon EOS camera attaches securely to camera body and provides a T-thread interface Thread: Both the adapter are universal M42x0.75mm Package included: 1 X T- adapter 1 X T-Ring adapter Compatible with Canon EOS camera