ISO Chart If you’re looking to learn more about ISO and how it effects your exposure, or the look of your image, please check out our detailed article: Understanding ISO as part of our Photography 101 series. You Might Also Like Note that, unlike f-stop and shutter speed, ISO values are never provided in half-stop increments. Your camera will either allow you to choose ISO in one-stop, or third-stop increments. Also note that towards the bottom of the chart, some of the third-stop options are listed as n/a. Currently, there are no cameras on the market that allow the selection …
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