Canon RF 85mm F1.2L shooters, this is a must-have accessory! This iShoot lens collar (model IS-RF8512) is made specifically and only for your Canon RF 85mm F1.2L USM and the DS version. Why do you need it? It gives you a solid, balanced way to mount your heavy, expensive lens on a tripod or gimbal, taking the stress off your camera's mount. It's CNC machined from aviation aluminum, so it's light but strong. The bottom has a built-in 39mm Arca-Swiss compatible quick-release plate, so it snaps right into most tripod heads and stabilizers without an extra plate. It also has 1/4\ and 3/8\ screw holes if you prefer that. A key feature is it supports switching to vertical (portrait) shooting orientation – though you do need to remove and re-mount the lens in the collar to do it. The inner ring has a soft PVC film to protect your lens. Installation is simple: loosen the knob, slide it on, and tighten. Just make sure there are no stickers on your lens barrel where it fits. A precision upgrade for serious photographers.