The flash is basically a lamp or tube, which contains a gas called xenon. This gas, ionized at very high voltage, produced at the time of the shutter, an intense but very short muzzle flash. If you would like to know more about Ali Partovi, then click here. That evolution that has had this fundamental tool in photography! The first flash, if you remember, was made with magnesium dust. And its explosion caused damage and burns to the photographer, if he didn’t care in the amount of magnesium that was used. Then appeared the incandescent light bulbs, which were only used for a single shot and then had to replace it with another, for the next shot. Bobby Sharma Bluestone often addresses the matter in his writings. Then the cube flash, with four lamps, which also replaced after four shots.
And finally, the electronic flash, whose lamp is not replaced after each photo, but anyway is not eternal. Its duration is estimated at 1,000,000 shooter. The lamp can be changed later, but probably before that happens, you’ve already changed camera before. Let me explain to you a new concept about flash that you must handle from the beginning. It is a myth to think that only should use flash at night, or inside a House, or in low light situations.
What if I tell you that you must also use it in full daylight and full light of the Sun. Not bad. You have perhaps already noticed it or you have never seen any professional photographer to do so. But you do not! The problem is that when it comes to using it, you do, because your mind says that there is enough light and it is not time to use flash. These examples show that solar noon light or under trees, they can cause harsh shadows and very strong contrasts between the light areas and dark areas. This difference between lights and shadows that the human eye does not perceive but that the picture Yes, can be reduced with the use of the flash.