I'm making a jig to photo book pages. I want to give my son my complete library in a box of disks rather than a semi-truck. I need a camera that I can reach under the table, turn the focus and check it on the computer screen, then, lock it in place so it takes pictures without having to focus each time. Secondly, I need the camera to be activated by a button that I can place in the top of the table OR that I can bump with my knee or foot. Any suggestions on what name brand, model, other equipment you would recommend to do the job and why would be appreciated. Thanks, len