30. BUTTONS AND SWITCHES

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LENSES ARE FEATURING more buttons and switches than ever before. This can enable you to further customize your interactions with the lens. There is a wide range of options that may or may not be available depending on the specific lens and its intended purpose. Some lenses have nothing more than a focus ring, while others may feature as many as a dozen buttons and switches. Generally speaking, longer telephoto lenses and more expensive lenses may have a number of the following features.

The Simple Features

The most basic control on a lens is the focus ring. It’s pretty obvious in its operation, but as an interesting note, ...

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