This set includes an adapter compatible with mirrorless interchangeable-lens cameras and a super-telephoto lens that is not typically supported by mirrorless lenses. [Compatible Models] EOS M / M2 / M3 / M5 / M6 / M10 / M100 / M200 / Kiss M / Kiss M2 [Features] This is a set of a mount adapter that allows you to attach over 60 types of EF and EF-S lenses to the EOS M series of mirrorless interchangeable-lens cameras, and a very popular 300mm super-telephoto lens. Recommended for those who own an EOS M series camera and want a super-telephoto lens.