The Basics of Photography: I for ISO

Chris Gampat The Phoblographer Sigma 18-35mm f1.8 final review photos (4 of 8)ISO 64001-50 sec at f - 2.2

As we continue our series on the basics of photography, we run into the letter “I”. What better term to define in the photo world than one of the biggest parameters of exposure today: ISO. In the video world they call it gain, and back in the film world they called it ASA. But either way, the ISO setting that your digital camera is set to is incredibly important to a number of factors like your shutter speed, aperture, and it can even affect flash output. Digital photographers and those that are brand new to the craft may not have known about what a pain ISO performance used to be in the early digital days and some of the headaches that film photographers used to go through by only working at lower ISO settings. These days, with a single camera you can have a vast range of settings.

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