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Canon EOS 6D by James Johnson

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Chapter Five: Capturing Light—The Exposure Parameters

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ISO

With the aperture controlled by your choice of lens, and shutter speeds limited by the laws of physics and the principles of engineering, the EOS 6D has pushed the remaining exposure variable to yet another degree of sensitivity. The EOS 6D, like the EOS 5D Mark III, extends the maximum ISO to 102,400. While you will seldom need such a high ISO, in implementing that range, the range of low-noise ISOs also is extended. Of course, if you want a very long exposure, you can set the ISO to as low as 50.

Control over ISO has also expanded over the years, and today we deal with terms like ISO ...

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