1.  Explain the Exposure Triangle.

--> The term exposure triangle is widely used by photographers to refer to the three primary components of a camera system that a photographer adjusts to control exposure.

2.  List the 3 components and what each controls. 

• --> Aperture: it is adjusted by turning the innermost ring on the outside of the lens housing. It strongly influences the relative amount of depth of field in a shot. A series of f-stop numbers are printed on the outside surface of the ring, indicating the size of the aperture. It controls the amount of light reaching the film or image sensor. In combination with variation of shutter speed, the aperture size will regulate the film's or image sensor's degree of exposure to light.

• ~~~> IOS (film speed) : Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system.

• ~~~> Shutter Speed:  is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph. The amount of light that reaches the film or image sensor is proportional to the exposure time.