A brief article outlining the principles of the ‘exposure triangle’ in which aperture, shutter speed and ISO are used to control exposure. Whether you shoot in Manual, Aperture Priority or plain old Auto, these three settings are the building blocks of every photo you take. To download your free article you will go through the shopping cart system and an invoice will be created for your records and for ours. But as there is a zero dollar value attached, you pay nothing.