David W. Richardson
Chapelgrove Films
Interesting. So are these the only effects of "blank guns": the recoil, an empty bullet case jumping out, and maybe some smoke at the back? You still have to add a gun flash, it sounds like, in post. I thought that the main reason to use blanks, instead of nothing, was to get a real gun flash out of the barrel. Then again, guns seem to spit out less fire in real life than in movies.
On a related note, I think post-added gun flashes look fake unless you somehow light up the gun and even the actor a little. The light from a real gun flash would light up the gun itself and stuff around it a tad. A dead give-away of a fake flash is that a flash emits from the gun, but nothing around the gun receives any light. Maybe have a light off screen pointed at the gun, which you flash when the actor pulls the trigger. The trick would be timing it just right of course.
Yes, you still have to add the muzzle flash in post. But using blanks in real guns is extremely dangerous. That's how people die.
I've seen FX software that adds the highlighting on actors and surroundings to coincide with the muzzle flash. It takes work and skill to make it look real, but that's true of anything you do on your film.