I've noticed that with krylon ultra flat black. When I spray and there's lots of excess, it dries before the particles hit the floor, and I end up with a layer of uiltra fine particles on the concrete floor and it's very slippery.
John > Your spray color must be very dense and the distance of the camera from the > air gun (or can spray) is too far that the color dry out (in particle form) > before it reach to the surface of the camera. If the camera is a cigar box, > or a box, it happens always because the paint particles reach one wall and > then "reflect" to another wall. So the particles cannot "stick" well to the > camera.