Operation skills of aperture priority and shutter priority

Lead: Let me briefly introduce the operation modes of basic aperture priority (Av) and shutter priority (Tv), and teach you how to operate your digital monocular camera correctly. From then on, the wrong aperture and shutter values will no longer be set, and the basic photography concept and strength will be improved.

Television shutter priority

The TV shutter priority mode is the most important and the first mode for beginners to learn monocular photography. At this point, turn the camera and aim the TV at the white mark next to it. At this point, the camera will switch to the TV shutter priority mode.

In order to adjust the shutter speed, we must turn a wheel next to the camera shutter release button and turn it left and right to adjust the shutter speed.

When we turn the wheel with the index finger of our right hand, we will pay attention to the camera information screen and find out the field of shutter speed to see if the shutter speed has changed when we turn the wheel. As shown in the above figure, we can see that the shutter speed is 1/200s at this time. You can try to practice by turning the shutter.

After adjusting the shutter value, you can try to practice taking a few pictures instead of finding some moving objects as exercises, such as pedestrians, cars and running children. First of all, you should find a slow-moving subject to practice, and then find a big-moving exercise.

Take photos through the optical observation window (OVF), move the wheel with your finger to adjust the shutter speed, and pay attention to the following photo information. It shows that the current shutter speed has been set to 1/320. You have to look at each photo to know that the shutter speed can't reach the target.

How to interpret the shutter speed? You can refer to the above picture. If you want to increase the shutter speed, the number on the right should be larger, so that the protagonist in the fast action can be caught and frozen. On the other hand, if you want to present the rhythm of the protagonist, you should slow down the shutter (for example, 1/60) and gradually adjust it according to your own needs.

Remember, when practicing shutter priority, the easiest way is to practice repeatedly at different shutter speeds. Every time you press the shutter, listen to the sound of the shutter with your ears and check the photos you just took. If you feel that it doesn't meet your expectations, such as the blur of the protagonist, then dial the turntable to adjust the shutter and practice it several times repeatedly, so that you will be more skilled in operating the camera and shutter.

Av aperture priority

Turn the shooting mode dial on the camera body to Av and aim at the white sign next to it, that is, start the AV aperture priority shooting mode. This mode allows us to freely adjust the aperture size, while the rest, such as brightness and ISO, are handled by the camera for us.

Similarly, you can adjust the aperture value by pulling the wheel next to the shutter key and turning it left and right.

At this time, move the wheel with your index finger and pay attention to the F value on the camera information panel, as shown in Figure F3.5 above, which is the aperture value at that time. With the rotation of the wheel, the aperture value will change constantly.

Aperture size not only affects the difference of incoming light, but also affects the depth of field. It is recommended to shoot still life. Through the different aperture sizes of large aperture (such as F 1.8) and small aperture (such as F8.0), feel the application of aperture size in shooting creativity.

When using the optical observation window (OVF) to take a picture and compose a picture, there is a line of photo information below, and the yellow number F2.8 is the aperture value at that time. Through this optical observation window, you don't need to look at the camera LCD information panel, and all kinds of information needed for taking pictures are clear here.

Finally, to help you review, the aperture value is inversely proportional to the actual aperture size. The larger the aperture value f, the smaller the aperture. When we say "you need to turn up the aperture, your aperture is not big enough", we mean the aperture size of the real lens, not the F value. Don't make mistakes here.

Beginners practice aperture priority mode. I would recommend a fixed-focus lens with a large aperture lens (such as Canon EF 50mm F 1.8 II). The effect is obvious and simple. You will be more familiar with the use of aperture in taking pictures and the operation of the camera.