Come si fa la taratura dell’autofocus ? Risolviamo il front / back focus delle nostre lenti!

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Fabio Porta
Published at : 25 Nov 2021
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FLASH FACILE, il mio video corso dedicato al flash a slitta: https://bit.ly/2wDdxIb

Quando va tutto bene e c’è un abbinamento perfetto tra il sistema di autofocus della lente e del corpo macchina, la messa a fuoco del nostro soggetto sarà precisa e avremo fotografie nitide e definite.

Se però la macchina è convinta di aver raggiunto la messa a fuoco corretta ma in realtà il punto di messa a fuoco cade davanti al nostro soggetto, ecco che avremo un problema di front focus.
Viceversa, se il punto di messa a fuoco effettivo cade dietro al nostro soggetto, ecco che avremo un problema di back focus.

Con la maggior parte dei corpi macchina (escluse sostanzialmente le entry level) è possibile intervenire con delle micro regolazioni nel menu per dire al software di correggere le informazioni di messa a fuoco prima di inviarle all'obiettivo ed è proprio quello che adesso faremo insieme.

I 3 dispositivi per controllare la messa a fuoco:
- Dslrkit Lens Focus: https://amzn.to/2pPU67H
- Datacolor Spyder Lens Cal: https://amzn.to/2IdsHUR
- Documento PDF Focus Chart: http://www.dphotojournal.com/focus-test-chart.pdf

Elenco delle macchine Canon, aggiornato ad Aprile 2018, con la doppia taratura per le lenti zoom: EOS-1D X, EOS-1D X Mark II, EOS 5D Mark III, EOS 5D Mark IV, EOS 5DS, EOS 5DS R, EOS 6D, EOS 6D Mark II, EOS 7D Mark II, EOS 70D and EOS 80D.

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DISCLAIMER:
I link ad Amazon e ad altri prodotti e servizi che trovate in descrizione sono link affiliati che mi consentono di percepire una piccola commissione pubblicitaria per ogni acquisto effettuato tramite i miei link.
A voi non costa un centesimo di più, ma potete darmi una grande mano per far crescere il canale.
Grazie!
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#fotografia #videomaking #thegeekphotographer
front focusback focustaratura autofocus

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