FLASH

• flash is also artificial light
• the major purpose of the flash is to illuminate a dark scene
• earlier flashes contained a mixture of magnesium powder and potassium chlorate
• the earliest flashes were powered by hand
• the flash lamps were replaced by flash bulbs
• flashbulbs took longer to reach full brightness
• a multi flash camera implements multiple flashes
• flash can be used as a main light source
• fill flash is used to supplement ambient light to illuminate something close to the camera
• bounce flash is a similar technique when flash is directed to a reflective surface
• flash can also be a bad thing as it will give off a harsh light
• flash also causes red eye effect
• flash can irritate most people
• flash may also noy be allowed in museums until given the right permit
• every flash photo is 2 exposures in 1; ambient light exposure and flash exposure
• flash exposure is not affected by the shutter speed
• flash illumination is greatly affected by the distance
• cameras measure ambient light and flash illumination separately
• bounce flash is also diffused light flash photography
• when using bounce flash you are re directing the light away from the subject
• direct flash will give you harsh shadows