When I started taking photography seriously about 20 years ago, I selected a very unusual quick release camera and lens mounting system manufactured in Germany by a small inventor run business called iDeesign. When the company went out of business several years ago, I cornered the market on used sales because I liked the system so much. Apparently the rights to the design were acquired by another company and they were once again for sale. I picked up a few more sets before that company stopped selling them.  At this point, I am very confident I have the largest collection of these quick release clamps in the world.  This weekend I decided to switch to  the industry defacto quick connect system and will either find a new application for the iDeesign clamps or start selling them off.