High ISO settings are useful for capturing fast action in poorly or unevenly-lit situations. (Taken with ISO 800 sensitivity, 1/800 second at f/6.3.) The white balance setting is used to make the colours in a digital photograph look natural under a variety of lighting conditions.

What is the relationship between ISO and Aperture?

Two controls affect the amount of light that comes into the camera and strikes the image sensor – aperture and shutter speed. The ISO affects how much light is needed to produce a correct exposure. The lens aperture is a diaphragm that is in the lens itself or immediately behind it.

THREE most IMPORTANT camera settings:

• Aperture is the size of the opening of the lens through which light enters to expose the shot.
• Shutter speed is the amount of time that light is allowed to enter through the lens for exposure.
• ISO is the amount of sensitivity toward the light entering into the lens.