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regolazione fine autofocus su canon eos 80d


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avatarjunior
sent on 27 Febbraio 2018 (18:11)    

Possiedo il sigma 17-70 macro versione contemporary e ho letto in giro che molti lamentavano problemi di front back focus ecc. Come faccio a capire se anche il mio in parte ne è affetto? Non ho i cosiddetti schemi/griglie numerate ecc per fare test approfonditi e non saprei usarle. Premetto che fino ad ora ci ho fatto belle foto e non sembra avere grossi problemi, Avendo 80d e potendo tarare la messa a fuoco direttamente in macchina, che tipo di valori consigliereste tra -20 e +20 per eventualmente cercare di tarare in modo efficace la messa a fuoco del suddetto obiettivo? O per chi ha provato a farlo magari su altro corpo macchina simile.

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