I finally remembered to stop into the local Walmart and ask about getting some cloth to make a nice big dark cloth. Funny thing was I didn't have to explain to the lady what a dark cloth was. She knew and found me a nice black cloth that was on sale. 3 meters cost me a total of less then C$7 or I guess $5 US. It's some sort of man made cloth and you wouldn't want a suit made out of it but it seem light tight. Black on the outside lined with something on the inside. I'm going to double it over and make something big enough for any camera I might dream of. I got the impression I wasn't the first looking to make a dark cloth.