iso

What is ISO in Photography?

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exposure triangle diagram al macphee the modest photographer what is iso

What is ISO? Picture ©Al Macphee/MiraclePR ISO (International Organization for Standardization) is a film sensitivity rating, which was also known as ASA (American Standards Association). The numbers run from low sensitivity to high. In the days of film, your standard kit bag would have several rolls of film: ASA 100, 200, 400, 800, 1600 and … Read more

The Exposure Triangle: How Aperture, ISO and Shutter Speed Work Together

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exposure triangle diagram al macphee the modest photographer what is iso

With the so-called Exposure Triangle, you’ve got a triangle with shutter speed, ISO and aperture at each corner. ISO and sensitivity to light Your ISO is basically how sensitive your sensor is to light. If you set your ISO to a really low value, say 50, you will need to be taking pictures in really … Read more