A camera operation mode in which the camera automatically fires its flash when its programming suggests flash is needed, such as in low-light situations.

Many cameras have autoflash so you don't have to keep turning your flash on and off. When selected autoflash fires your flash if there's not enough natural light in your picture.

Flash mode in which the camera automatically decides whether or not flash is needed, turning the flash on in dim light and keeping it off in bright light. It's the default mode of most point-and-shoots.