I need to photograph a lot of granite slabs straight on to use as textures in a house remodel that I am working on. All of the slabs are polished and because they have to be taken straight on, how can I prevent myself from being photographed. I thought that maybe I could make a temporary wall that would have matte black fabric stretched over it and then just cut a hole big enough for the camera lens to get through...that way I could just photoshop out a very small reflection... There are a lot to do so editing myself out of every pic is not an option. The slabs are ~5x10 feet. Thank you for your help.