Aperture, shutter speed, and ISO work together to produce a properly exposed image.

The APERTURE refers to the size of the opening in the lens that lets in light. The bigger the opening, the more light reaches the sensor. As most phones have a fixed aperture built in that can’t be changed, you use the shutter speed and ISO to affect your exposure.

The SHUTTER SPEED is the time the light is allowed to hit the sensor. A fast shutter speed creates a shorter exposure. In a dimmer environment, you can use a slow shutter speed, so your frame has a longer exposure to light. The ISO is your camera’s sensitivity to light. Choosing a higher ISO boosts the camera’s sensitivity to light.

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