Theses days, almost every digital camera has exposure compensation, which means as users; we are able to control the amount of light flowing into the lens. This illuminates the photograph. The exposure compensation on the digital camera can be altered manually or can be set to override the metered exposure the cameras functions.  The exposure principles provide an expedient line of attack to put a figure on the available light intensity and exposure.

To help contain details in dark areas in a photo, Exposure Values (EV) was introduced. This helps to maintain the standard for each and every user. Looking from a technical aspect, the Exposure Values are numbers that refer to a variety of apertures of lenses and shutter speed.

Light meters are not able to distinguish colour. They distribute every scene as 18% middle grey and produce the exposure accordingly. The majority of digital cameras will allow a photographer to compensate the exposure by 1 to 2 EV, and with 1/3 or 1/2 stop increments positive or negative.

It is important that we understand the science behind the exposure. The values of exposure range from -2 to +2. If the number is a positive, this generally means the area in which you are photographing is mostly light and bright. An example would be of a snow landscape which is a great deal brighter than the focal area under consideration. Consequently, negative number values are used for darker pictures, and also when the background on the photograph is dark, but the fore area under consideration is brighter.

Exposure Value can also be used as a creative tool, use your imagination and experiment with what you think works, and what doesn't. The correct amount of exposure of a picture can vary from person to person, so it's a good idea to try to see how your personal preferences rest. Widen your knowledge of your digital camera, and you will create better, more attractive pictures, as well as being creative and imaginative with your subjects.