Editing Exposure value (section)

==Exposure compensation in EV==

Many current cameras allow for [[exposure compensation]], and usually state it in terms of EV ([[#CITEREFRay2000|Ray 2000]], 316). In this context, EV refers to the ''difference'' between the indicated and set exposures. For example, an exposure compensation of +1&nbsp;EV (or +1&nbsp;step) means to increase exposure, by using either a longer exposure time or a smaller f-number.

The sense of exposure compensation is opposite that of the EV scale itself. An ''increase'' in exposure corresponds to a ''decrease'' in EV, so an exposure compensation of +1&nbsp;EV results in a smaller EV; conversely, an exposure compensation of −1&nbsp;EV results in a greater EV. For example, if a meter reading of a lighter-than-normal subject indicates EV&nbsp;16, and an exposure compensation of +1&nbsp;EV is applied to render the subject appropriately, the final camera settings will correspond to EV&nbsp;15.