What Is Flash Exposure Compensation When Talking About Photography?

In photography flash exposure compensation is a feature that allows the photographer to add exposure compensation to output power of their flash units. Flash Exposure Compensation can be + (plus) or – (minus) in increments of 1/3 EV (exposure value). It is important to note that flash exposure compensation effects the flash output only, the cameras exposure settings remain unaffected. This allows a photographer to reduce dynamic range by brightening dark areas of an image without effecting the exposure or brighter areas. Flash exposure compensation can only be used in auto or TTL flash modes.