How do Cameras Work?

How do Cameras Work?

       1.   Aperture

The aperture is the diameter of the hole inside the lens, therefore changing the aperture either increases or decreases the size of the hole. This then affects the amount of light, with a wider aperture there is a large hole and so lots of light goes into the camera. This also affects the depth of field of your final image.

   2.   Shutter Speed

The shutter speed is the amount of time it takes for the mirror to flip up, the shutter to open and close and the light present to be recorded onto the film. The shutter speed determines the expose length as well as the amount of motion blur. The faster the shutter speed, the more crisp the images will be as less light will be recorded and motion will be frozen.  

        3.   ISO

     The ISO controls the sensor that captures the light. A higher ISO is more sensitive and is often used at night, however it captures more digital noise. A quite pixelated, grainy image is referred to as digital noise