Your digital camera has more controls for focusing an image than you probably imagine, and perhaps one of the most underused of these functions is your digital camera’s focus lock feature. If you know how to use focus lock on your digital camera then you already know that it’s a wonderful tool for getting sharp, in-focus pictures of off-centre subjects.
If you don’t know how to use focus lock, fear not. Below, we show you how to use this handy function in just 5 simple steps.
How to use focus lock to shoot off-centre subjects
Step 1: Set your shooting mode
Set the camera to AF-S Single-servo AF. how you do this varies from digital camera model. In this example, the Nikon D700 has a dedicated lever by the lens mount. On other digital camera mdoels you can select this on screen.
Step 2: Pick the area mode
Set the AF-area mode to Single-area AF. Again, the method varies – the Nikon D700 here boasts a dedicated lever, while many other models have on-screen selection.
Step 3: Select your focus point
You now need to half-press the shutter release button to ready the camera for shooting, and then press OK on the rear. This selects the central focus point.
Step 4: Frame your shot and focus
Aim the camera so the central point is lined up precisely with the point in the picture you want to focus on. Here, it’s our subject’s left eye. Now lightly press the shutter release button to activate the autofocus. The AF point over our subject’s eye lights up in red.
Step 5: Reframe the shot
Keeping the shutter button half-pressed, reframe the shot. Then press the shutter button down fully to take the picture.