Hello Apuger's, Going to be using my bulb gun with my mini speed. Also will be using XP2 as my film. I just picked up one of those hinged graflex flash shield diffusers that clip onto the reflector. The diffusion is pretty good and wondering what the light loss is. I figgure one stop but not sure. Anyone ever use a Graflex bulb gun with shield? I know I should test but don't have the time.