Fujifilm Back-Button Focus (BBF) Setup

Breve Sommario

Questo video spiega come configurare la messa a fuoco con il pulsante posteriore (back button focus) sulle fotocamere Fujifilm. Questa tecnica separa il comando di autofocus dal pulsante di scatto, consentendo un controllo più preciso e flessibile della messa a fuoco. Il video illustra i passaggi necessari per disattivare l'autofocus dal pulsante di scatto e assegnare la funzione di autofocus a un pulsante sul retro della fotocamera, offrendo vantaggi in termini di velocità e precisione, specialmente in condizioni di scarsa illuminazione o con soggetti in movimento.

  • Separare l'autofocus dal pulsante di scatto offre maggiore controllo.
  • La pratica è essenziale per padroneggiare la tecnica.
  • La funzione può essere utilizzata anche in modalità di messa a fuoco manuale.

Introduzione al Back Button Focus

Il video introduce il concetto di back button focus nelle fotocamere Fujifilm, una tecnica apprezzata da molti fotografi perché disaccoppia il comando di autofocus dal pulsante di scatto. Tradizionalmente, il pulsante di scatto esegue due azioni: attiva l'autofocus e scatta la foto. Separare queste due funzioni può essere vantaggioso, specialmente quando l'autofocus fatica a bloccarsi a causa di scarsa illuminazione o mancanza di contrasto. Con il back button focus, si può bloccare la messa a fuoco una volta e poi scattare più foto senza dover rifocalizzare ogni volta.

Come Configurare il Back Button Focus

La configurazione del back button focus prevede due passaggi principali. Primo, è necessario disattivare l'autofocus dal pulsante di scatto. Questo si fa nel menu "Button Dial Setting" disattivando "Shutter AF" per la modalità autofocus singolo (AFS) o continuo (AFC), a seconda delle proprie preferenze. Secondo, bisogna assicurarsi che un pulsante sul retro della fotocamera (solitamente "AF-ON" o "AE-L") sia impostato per comandare l'autofocus. Nella maggior parte delle fotocamere Fujifilm recenti, questa funzione è già abilitata di default.

Utilizzo e Pratica del Back Button Focus

L'autore sottolinea che l'utilizzo efficace del back button focus richiede pratica. Abituarsi a premere un pulsante sul retro della fotocamera per attivare l'autofocus invece di premere a metà il pulsante di scatto richiede tempo e può portare a perdere qualche scatto all'inizio. In modalità AFS, si preme il pulsante posteriore finché il quadrato di messa a fuoco non diventa verde, poi si può rilasciare il pulsante e scattare. In modalità AFC, è necessario tenere premuto il pulsante posteriore per mantenere l'autofocus attivo mentre si scatta.

Funzionalità Extra e Modalità Manuale

Un'ulteriore funzionalità interessante è la possibilità di utilizzare il back button focus anche in modalità di messa a fuoco manuale. Per abilitare questa funzione, è necessario impostare "Instant AF Setting" su AFS o AFC nel menu AF/MF. Questo permette di utilizzare il pulsante posteriore per attivare l'autofocus temporaneamente mentre si è in modalità manuale, offrendo maggiore flessibilità e controllo.

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Trascrizione

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0:00 if you've been wondering how to set up back button focus in your Fujifilm camera or this is the first time you're hearing about it and you're wondering what it is we're going to spend the next few minutes covering that this is just one of the many Focus techniques that you'll learn in the Fuji film camera fundamentals course which you'll find at photoc courses. link FCF and the reason that a lot of photographers love using this technique is because it separates the autof Focus command from the shutter button with the traditional camera setup the shutter button does two things first it commands autofocus and then it creates the exposure it takes the picture now there's a school of thought out there that these two actions should

0:47 be completely separate from one another you shouldn't have to go through the step of commanding autofocus before you want to create an exposure what happens if you struggle getting that autofocus lock in the first place like it was dark or your subject didn't have a lot of contrast and I mean let's be honest the Fujifilm autofocus system isn't known for its blazing fast Focus speeds so there may be times where you only want to command autofocus once get that lock confirm that lock and then you can start taking a bunch of pictures without having to get that lock go through that entire drill every single time so with this setup the autofocus command is a

1:34 completely separate step a completely separate button hence the back button Focus the button on the back of the camera labeled either afon or AFL depending on the camera you're going to push that to command autofocus and then when you're ready to create the picture then you'll do that using the shutter button now there are two steps to doing this I like to kind of separate the two and the first step is to detach the autofocus command from the shutter button you'll do this in the button dial setting go to the menu setup button dial setting and then go to shutter AF when you get into shutter AF you're going to turn this off for either singleshot

2:23 autofocus or continuous autofocus or both that's just going to depend on your style and your needs if you want to be able to use the half press on the shutter button while you're in continuous autofocus you can just keep your finger there and take the burst of photos as it's continuously focusing you can leave this on for continuous autofocus but if you want to use a separate button to focus when you're in single shot autofocus then you can turn it off for AFS and then the second step is to enable the back button for autofocus in nearly all recent Fujifilm cameras this is already enabled by default so you can press and hold the display back button

3:08 when you're in shooting mode and it'll take you to this function setting screen that shows you how all of your controls are mapped out you'll find the button labeled either afon or AFL AEL some variation of that press okay and then scroll through the list looking for afon if it's not already there you don't want to get confused by selecting AF lock or AE lock or a e AF lock what you're looking for is afon that is going to be the function that commands autofocus when you press that button now you don't need to use this specific button you can actually use any other button on the camera that you want to use to command autofocus just following the same steps

3:54 and that's really all there is for setting up back button Focus it's quite simple using it however is I don't want to say difficult I don't want to discourage you from it but there are some gotas in fact just one big gotcha and that's that you have to practice because if all you've been doing up to this point is pressing the shutter button halfway to command autofocus you wait for those squares to turn green and then you press the shutter all the way to take the picture you're going to forget that you need to press a button on the back of the camera first to command and autofocus and then when that lock is verified then you can press the shutter button so that is going to take some practice you are going to miss some

4:39 photos right away which is why you have to practice you don't want to be missing those photos during game time because you haven't practiced before the game to use a sports metaphor you just select your focus mode as you normally do if you're in AFS you push this button until that square turns green and then you can release that back button and start taking pictures you don't need to command autofocus again unless you change your focal length your aperture you change your focus distance to the subject as long as all that stuff stays the same you don't need to focus again if you're in AFC you will need to hold that button down for as long as you want to command autofocus hold it down with

5:25 your thumb the camera will be continuously updating that focus and then with your index finger you can just take those pictures whenever the moment's right there's one other kind of little secret back button Focus feature in fuif foam cameras and that's that you can also use this button while you're in manual focus mode you can command autofocus while keeping the camera in manual focus mode to set that up go to your AF MF setting menu and look for instant AF setting set that to either AFS or AFC which will will dictate how autofocus behaves when you press that button while in manual focus mode you can be in manual focus mode and use the button for single shot autofocus or

6:11 continuous autofocus you set that here so that's the quick overview of what back button focus is and how to set it up and use it in Fujifilm cameras it's really quite simple once you practice it and like I said that's just one of the many Focus techniques that you'll learn in the Fujifilm camera fundamental course there are a bunch of free previews you can check out and then you can save 20% with the coupon code tube2 if you have any other questions or comments please let me know if there's any other topics that you want to learn about Fujifilm cameras again just let me know and I'll see if I can turn that into a video here for you subscribe for more great tips like this every week and we'll see you again in the next video thanks for watching

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