Foreword: I understand Halloween's over but I'm still enjoying the second half of my long marathon.
In Evil Dead II (1987), there is a gory scene where blood is splattered onto a lightbulb, and the room is consequently illuminated in a red tint, as if the light were to have a red filter.
This was achieved, no doubt, by simply throwing fake blood on a bulb in for a slow motion shot, and the second shot was just achieved by whacking on a red filter to any old studio light they had.
My question is: how accurate/realistic is it?
Would blood (human or otherwise) not be too viscous, thick and opaque to allow for this effect to happen?
What would happen if you coated a lightbulb in blood?