Back button focus

Started 7 months ago | Discussions thread
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diness
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Back button focus
7 months ago

Curious question of the day... What does back button focus do that half pressing the shutter can't do? Why do some prefer this method? Sorry if this is dumb but they seem to be the same to me?

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Canon EOS 6D Canon EF 70-200mm f/4.0L USM Canon EF 24-105mm f/4L IS USM Canon EF 40mm f/2.8 STM
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