Extra Credit :
-rule of thirds: A principle of the Golden ratio with broad application as a rule of thumb or guideline which applies to the process of composing visual images such a design, films, paintings, and photographs.

-resolution: a measure of digital audio quality

-camera functions: the camera functions, while another pair of CR-V3 batteries of four AA size rechargeable in a battery tray in the base powered the digital functions.

-auto focus: system uses a sensor, a control system and a motor or tunable optical element to focus automatically or on a manually selected point or area.

-white balance (ISO): white balance is particularly useful for reviewing different white balance settings in the field. In contrast to manual white balance bracketing. 

-shot timer: a shot timer is a device that responds to sound of gunshots, recording the time that they occur. Most of them can give a start signal, usually a beep of some sort. Many are also capable of producing a stop signal.