Day 3 still Life FocusED FITNESS
The autofocus mechanism is one of the hardest SLR systems for any photographer to fully control
Focusing is easy to master if you have plenty of depth of field. If you use a wide lens with a narrow aperture and don’t get too close to your target you won’t have a problem, but start using a long telephoto, a macro, or a fast-wide aperture prime at it widest aperture and you will soon find that getting the camera to focus accurately and reliably on the right point takes some skill. Focusing manually by simply looking through the viewfinder is useless on a D-SLR, you have to trust the autofocus. But you need to tell it where to focus. In many situations, choosing the focus point is not enough. The AF feeds off contrast, so you need to point it at something with an edge or with some texture that it can lock onto. Most importantly, get into the habit of checking your shots are sharp before you leave the scene and lose the ability to reshoot! wait for the green light Gently squeeze the trigger to get the autofocus to fire up. When it finds its target and locks on, a green light appears in the viewfinder (and you get an optional beep too). Different Nikons have different numbers of autofocus points. Your SLR can pick the one to use, but it’s good practice to get used to selecting it yourself. Choose the Single Point AF mode, then use the four-way controller on the back of the camera to choose the one that you want, which will light up. The autofocus needs to be awake and working, so you may need to give the trigger a squeeze before you pick your AF point Live rounds In low light, or when you are very close to your target, it can often be easier and more accurate to focus using Live View. You then autofocus on any point in the frame.