How to Use the Back Button to Focus Your Camera

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The other technique is often called back button. Focusing, which means you assign some button on the back of your camera to be the please do autofocus now button. And then the shutter button is and you turn off the feature that makes the camera try to focus when you push the shutter button halfway down. It does not seem to introduce noticeable lag in any situation I've encountered so far.

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- Camera-related follow-up
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