Flash Photography Basic Concept

•      Every flash photograph is actually two exposures in one.

• fill flash can be used when subject is backlit or sidelit to eliminate silhouettes or shadows.

• flash exposure is mot effected by shutter speed. only aperture ans ISO but not shutter speed.

• flash illumination is dramatically affected by distance.

•  your camera measure ambient light and lash illumination separately.

• with automatic flash metering, 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 diffuser and light bouncing.

•  it is possible to chance the order of when the flash fires using "Rear Curtain Sync."

•  removing the flash from the top ofthe camera