I am new to video mapping and have a sculpture I am throwing video on to. It has a depth of about 3 feet. I am using a short throw video projector so that I can get a large image from only 4 to 5 feet away. My problem is that I can't get the image to be in focus (depth of field?) through all 3 feet of the depth of the sculpture. If it is in focus in the front, it is out of focus in the back and vice versa. What attribute of a projector determies how deep the depth of field of focus is? I realize that if I move the projector further away and use a mid or long throw projector, that would be one solution, but it is not a solution that works for me. All else being equal, what would make a short throw projector have the deepest focus range compared to other projectors? THANKS FOR ANY HELP!!!!!!!!!!!!!!!!!