What is flash exposure compensation (FEC)?
Flash compensation is simply the adjustment of the intensity of the flash burst. Flash compensation is used when your flash is putting out too little or too much light. Many sub-dSLR cameras do not offer this option. Say you are shooting a group of people in black suits. Your flash fires and it turns out that your photograph is too dark. You didn’t get enough light coming from the flash. You can dial the FEC (usually located on a flash unit if external, and sometimes controllable from on the body of the camera, depending on the model) up from the “0” setting, usually up to 2 or 3 stops higher (or lower) than the “0” value. While it may seem counter intuitive, if you decrease the flash compensation the effective range of the flash increases and if you increase flash compensation the effective range decreases. Why? Let’s say your flash has a range of 100′, if you increase the flash compensation, 100′ would still be exposed correctly, but you requested the flash to overexpose, so the usab
