This is the very first PL Mount where you don't have to modify your Canon DSLR camera. This means you don't have to send it away and hope it will get back to you in one piece. Also your standard Canon warranty will still be in affect when you use this adapter. Thanks to the high quality optical glass inside the PL Mount we can create a perfect 35mm light circle around your full frame sensor. So you can film with your Canon DSLR without any distorsion or lost in depth of field. The Zunow PL Mount 5D comes standard with a V-lock support plate. This will support your PL Mount with a heavy cinematic lens attached. Thanks to the V-lock system you can mount you DSLR onto every quick release adapter. So easy to use onto your tripod.