Get flash to fully experience Pearltrees
The left half shows the photo as it came from the digital camera.
A flash is a device used in photography producing a flash of artificial light (typically 1/1000 to 1/200 of a second) at a color temperature of about 5500 K to help illuminate a scene. A major purpose of a flash is to illuminate a dark scene. Other uses are capturing quickly moving objects or changing the quality of light.
Dynamic range , abbreviated DR or DNR , [ 1 ] is the ratio between the largest and smallest possible values of a changeable quantity, such as in signals like sound and light . It is measured as a ratio, or as a base-10 ( decibel ) or base-2 (doublings, bits or stops ) logarithmic value.
Glare is difficulty seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night.