Flash Photography Basics

• every flash photograph is two exposures in one.
• fill flash can be used when subject is backlit or sidelit to eliminate silhouettes or shadows.
• flash exposure is not affected by shutter speed.
• flash illumination is dramatically affected by distance.
• your camera measures ambient light and flash illumination separately.
• with automatic light metering the,, the flash illumination is measured after the shutter button is pressed, and the flash output is adjusted accordingly.
• every SLR camera with a mechanical shutter box has a maximum flash sync shutter speed.
• harsh lighting, washed out subjects and red eye can be eliminated by using diffusers and light bouncing.
• it is possible to change the order of when the flash fires using "rear curtain sync."
• removing the flash from the top of the camera helps eliminate res eye and unflattering shadows.