Introduction to photography 10 focusing mode

Focusing modes are divided into automatic focusing (AF) and manual focusing (MF).

Auto focus, focusing is faster, and we can use auto focus in most life scenes.

The so-called AF autofocus means that when we half press the shutter, the camera will automatically complete the focusing operation. In autofocus mode, we can generally divide it into three focusing modes: single autofocus, artificial intelligence autofocus and artificial intelligence servo autofocus.

That is to say, our semi-shutter camera only focuses once, and if it is combined with the camera's single-point autofocus shooting, the accuracy is the highest. Generally used to shoot portraits or still objects.

It is usually used to photograph moving objects. If we shoot a moving object, if we still apply a single autofocus, the camera will only focus once. Once the position of the moving object changes, the camera will not focus continuously, and the photos taken are easy to paste. If you are shooting a moving object, such as capturing a cyclist, you can use it. When shooting, press the shutter to focus and keep the camera moving with the motion trajectory of the moving object, then the camera will keep focusing for many times to keep the focus on the object being photographed, ensuring accurate focusing and clear shooting.

It can be regarded as a "smart combination" of the first two focusing methods. The first focus mode takes pictures of static objects, and the second focus mode takes pictures of moving objects. But sometimes when you pat a baby, he may or may not move, and it is difficult to predict his movements. When this mode is set, the camera will switch seamlessly between the first and second focusing modes to ensure accurate focusing as much as possible, thus ensuring that the photos we take are clear.

Micro-cameras usually switch MF through the camera's function menu.

Now look at the lens in your hand. The lens has two rotatable rings, a coarse zoom ring and a fine focus ring.

When focusing manually, we don't need to press the shutter half to focus, just rotate the focusing ring in front of the lens slowly and continuously. When we observe the subject from the viewfinder and slowly change from blur to clearest, we can completely press the shutter and finish shooting.

Manual focusing is difficult to operate, because focusing depends entirely on your own ideas, and whether focusing is clear or not depends on the naked eye. In order to ensure accurate and foolproof focusing, under normal circumstances, we will press the magnifying glass symbol on the fuselage (in Canon micro camera, it is a rectangle with a dotted cross in the middle, which is similar to the focused picture) to enlarge the picture, and then it will be more accurate to observe with the naked eye whether the subject is clear enough.

For example, in a dark environment, it is often difficult to focus in AF autofocus mode. At this time, you can use MF to focus manually.

For another example, when we shoot a large backlight effect, there will be a strong glare effect because a lot of light enters the lens. This is autofocus AF, which may be difficult to focus. At this time, you can focus on MF.

For example, when we want to shoot special effects such as facula, we can also switch to MF manual focusing and rotate the focusing ring until a beautiful facula effect appears, and then shoot.