… Back button focussing also makes switching between continuous focus mode and single shot focus mode (ONE SHOT) quicker and more intuitive. It is a useful way to stop the camera’s autofocus system from getting continuously engaged when the shutter is released. Back button focus means you no longer need to fiddle with the focus mode dial on your camera. What Does the “Info” Button do on My Canon Rebel DSLR Camera. Try it out and see what works for you. Many professional photographers change the way their autofocus operates by removing the focus from the shutter release button altogether. M-Fn button… Canon was the first camera manufacturer to implement back button focus in 1989 and has put the feature in all DSLR models made in the last 8 or 9 years (yes, even the Canon Rebel XT and XTi). Firstly, alternate to the method of focusing through shutter release. Custom Function settings allow you to control the function of the AF-ON button – some photographers set it up to activate focus while pressed and others like it to temporarily disable focus. Canon was the first camera manufacturer to implement back button focus in 1989 and has put the feature in all DSLR models made in the last 8 or 9 years (yes, even the Canon Rebel XT and XTi). Continuous Auto Focus. Sport photographers often use AI Servo focusing with BBF. If you set your focus mode to AI Servo, pressing the AF-ON button will focus as if you had selected One-shot mode. You need to use a Custom Function to change the AE Lock button to a Back Button focus button. It locks the original focus in, so you can get creative with your camera. If you use the shutter button to set focus, you have to press halfway to set focus for each shot. The 6D does not have many outer points so it doesn't … Secondly, no more constant refocusing. 3 Locks exposure when you press shutter release half-way and maintains this reading until you take your finger off the shutter release button again. Press the back focus button once to lock in focus on a fixed subject. Use the scroll wheel and choose C.FnIV:Operation/Others. The first step of getting set up for back button focussing is to disable this. For each line, the text before the ‘/’ sign indicates what the shutter button will do and the text after it indicates what the AF-ON button will do. Setting up Back Button Focus on a Canon Canon was actually the first to introduce the back button option in 1989, and that feature is available on all but the original digital EOS Rebel. Using the AF-ON button can also save time when you’re shooting a series of images of the same subject. Out of the box, most Canon cameras are set up with metering and autofocus assigned to the shutter button. These instructions are based on a Canon T3i. Focus is still controlled using only the rear button. Use the AE lock (*) button to control focus if your camera lacks the AF-ON button. Lexy Savvides/CNET To fully enable back button focus using AF-On only, you will need to disable focusing when pressing the shutter button. Locks exposure when you press shutter release half-way and maintains this reading until you take your finger off the shutter release button again. If you have any more questions specifically about the M50, try posting on the Canon EOS M forum rather than this one. In this article, we will show you how you can quickly unleash the power of back-button auto focus on the Canon EOS 6D Mark II ().Be sure to check out our article on why everyone should switch to back-button auto focus here.. The options displayed may appear rather cryptic at first but it’s not complicated. Back button focussing also makes switching between continuous focus mode and single shot focus mode (ONE SHOT) quicker and more intuitive. Hit the “set” button (center button) to open the options. This setting lets you customize the camera so that auto focusing is initiated by pressing the rear “AF-ON” button with your right thumb instead of by half pressing the shutter button. Then try back button focusing which transfers control away from the shutter button to the AF-ON button. Once set up, BBF allows you to quickly focus on a subject by pressing the AF-ON button and then recompose the shot without the camera altering the focus when you press the shutter release button. Now select the option ‘Shutter button/AF-ON button’. For years, Canon EOS cameras have offered photographers an option to change the way autofocus is activated. If you use BBF you have to keep pressing the back button for continuous focus. If you keep the AFON button pressed, it will track focus. That way, you can easily switch back to the more familiar way of working while you’re experimenting. Here's an extract from an article in the July-September 2013 issue of EOS magazine which explains it all. I keep mine at AE lock to only lock the exposure when I half-press the shutter release. half-press: Metering and AF start – if you want to switch to back-button focusing, then change this to either “Metering start” or “AE lock”. Canon Back Button Focus Instructions. I use back-button focusing, so I have this set to only "Metering start". Want to use autofocus on your Canon EOS camera with a greater degree of control? Canon DSLR cameras like the EOS 50D, 60D, 7D and 5D Mark II have an option to change the way auto focus is activated. The task of autofocusing is instead transferred to the AF-ON button, which is conveniently located on the back of the camera under your right thumb. If you would like to try out back button focusing with AI Servo, you may want to store the settings on one of the custom modes. Back button focus. This may at first seem more complicated, but many photographers find that after a brief period of practice, they wouldn’t want to revert to the more standard method. But if you keep pressing the AF-ON button, you can take as many shots as you want, and the camera will use the same focusing … Use this setting if you’re worried about accidentally re-focusing. Once focus is achieved, as long as you keep depressing the focus button, focus will be maintained using other focus points as the target moves off the center point. If you look at the info screen and press AF-ON you see that it switches back to single shot AF, which is confirmed as well by the focus beep. If you use a Canon camera, the process of setting it up for Back-Button Focus starts with the Custom Function Menu. 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