Most cameras can be operated either –
• By adjusting various controls manually to suit shooting conditions,
• Or relying on the camera’s automatic controls to make corrections. Each method has its advantages and drawbacks, and you learn with experience which is most likely to produce the best results at any time. In most cases, you can choose whichever technique is preferable.
There are several systems and design variants. When working under difficult conditions, they can be more reliable than a human operator. At worst, they can even prevent you from taking the shots you want!
Typical automatic camera controls include:
Automatic gain control (AGC)
Automatic white ...