How Many AF Points?

Consumer Voice - - Digital Cameras -

In ad­di­tion to be­ing able to au­to­mat­i­cally set ex­po­sure, dig­i­tal cam­eras au­to­mat­i­cally ad­just the fo­cus of the lens with aut­o­fo­cus fea­tures. But more ad­vanced cam­eras in­clude ad­di­tional fo­cus­ing func­tions. Be sure to look care­fully at the types of ad­di­tional fea­tures avail­able on your cam­era, in­clud­ing man­ual fo­cus. On SLRs, look for the num­ber of AF points they have and what types of AF modes are avail­able. SLRs in­clude ad­di­tional types of AF (of­ten called dy­namic AF) that groups fo­cus points into a field to more ac­cu­rately track mov­ing sub­jects. For com­pact dig­i­tal cam­eras, four to six com­monly used points like land­scape, portrait, night and sports should be fine if IS and other fea­tures are in­cluded.

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