Back Button Focusing For Tack Sharp Focus - Digital Photo Secrets: "We are all on the quest for those tack sharp photographs. We spend thousands of dollars on new high end glass and upgrade our camera bodies annually seeking out those extra megapixels. What if I told you there is something you could be doing right now that would increase the clarity of your photos for free? No, I’m not joking. I’m talking about back-button focusing."
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