Flash Bulb?

...Like a flash bulb in the darkness. Momentary illumination then nothing, until the rising pitch screaming I'm getting ready, yes I'm getting ready, look out! I getting ready to flash you with my brilliance again. But the picture doesn't always turn out right, does it? The light sometimes catches what we don't want to see and the flash sometimes blinds us, leaving after images so strong that we stumble about for a while, as we go along...