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Message: <blockquote data-quote="Stoshowicz" data-source="post: 355068" data-attributes="member: 31397">The article by Lisa Tichane seemed to indicate that the main reason to be doing this backfocusing was that it maintained the focus mechanism during the interval between a half press of the shutter button and lifting the mirror, Im usually using the D51 mode on the D7100 , and thought that the autofocus was already staying active with predictive algorithms all the way through to activating the shutter.Though it does great , Id love to improve my focus performance since I like to shoot birds and occasionally dragonflies in flight,,but Im thinking it would take some real effort to retrain,, can you explain more, where my understanding is lacking in this respect, about whats happening different in the two modes?</blockquote>