The t2 adapter for canon eos r is needed to connect your camera to a camera adapter of another optical device. With a t2 adapter it is possible to use your spotting scope or telescope as a telephoto lens of your canon camera. It is also possible to connect the camera to a camera adapter of a microscope in order to make great detail shots. Application marumi t2 adapter for canon eos r first remove the lens from the bayonet mount of the camera and simply place the t2 adapter here. Now mount the right camera adapter with the t2 adapter so you can slide it over the eyepiece. In this way, it is possible to use the spotting scope as a telephoto lens, for example, and create the most beautiful unique images at enormous magnification. On the other hand it is possible to connect the camera to a microscope to take extremely detailed pictures and videos of the subject. Marumi t2 adapter for canon eos r this t2 adapter is suitable for all canon system cameras from the r system series. You can recognize this series of cameras by the red line on the lens mount (see image 2) if your canon camera has a different symbol, you need to use a different t2 adapter. These can be found in the optional accessories: white circle: marumi t2 adapter for eos m red circle: marumi t2 adapter for eos digital do you have a camera with a red circle and a white square, please contact us for the possibilities.