Basic theoretical knowledge of photography

Many people like to learn photography, perhaps out of hobbies, or want to be a photographer, find a better job and sort out some basic knowledge of photography theory. Welcome to read!

Typical application of exposure compensation in real shooting

1 Increase exposure compensation to shoot fair-skinned portraits.

Portrait photography, exposure compensation is increased by +0.3EV~+0.7EV, which can shoot beautiful human skin color. The method is to measure the exposure value of the skin (especially the spot metering method is more accurate), and then increase a certain EV value, which can make the skin look whiter.

The above is only for shooting beautiful women and children. If you want to photograph old people or people with dark brown skin, or people in mines or underground coal mines, you should make negative exposure compensation to make their skin look more saturated and deeper, so as to highlight their own age, race and professional characteristics.

Increase exposure compensation and shoot white clouds, white fog and snow scenes.

Shooting white clouds and fog scenes is different from ordinary landscape photography, and usually the pictures to be shot are high-profile types. Therefore, when shooting in evaluation metering mode, the picture may become dark, so the fog in the picture should be measured and the exposure compensation should be increased appropriately.

The same problem exists in shooting snow scenes. Because the brightness of snow is very high, exposure according to the photometric value calculated by the camera itself will lead to underexposure and make the photographed snow gray. Therefore, exposure compensation function is generally used to correct exposure when shooting snow scenes. According to the proportion of snow in the picture, it is usually necessary to increase the exposure compensation of 1 to 2 blocks. The left side shows the beautiful scenery that can only be taken by adding exposure compensation.

3 Reduce exposure compensation and make the picture more colorful.

Exposure parameters have a great influence on the color of the picture. The more exposure, the brighter and lighter the color of the scene in the picture. On the other hand, if the exposure is insufficient, the color of the scene in the picture will appear dull and rich.

Therefore, on the basis of normal exposure, properly reducing the exposure compensation can make the color of the subject look richer.

If you shoot the blue sky, you can make the sky in the picture look bluer by reducing exposure compensation. If you shoot flowers, you can compensate by reducing the exposure, so that the colors of flowers in the picture look brighter.

4. Reduce exposure compensation and take simple pictures with dark background.

When shooting flowers, still life and other subjects, in order to make the picture more concise, we can use the spot metering mode to aim at the relatively bright area of the subject in the foreground for metering, so as to ensure the accurate exposure of the subject. Then, by compensating the negative exposure of the photo, the background becomes dark or even pure black due to underexposure, thus highlighting the subject in the foreground.

5 emphasize contour effect by reducing exposure compensation

When shooting backlit works, exposure control can not only show the overall environment including details, but also treat the picture as a silhouette. The former needs to increase exposure compensation, while the latter needs to decrease exposure compensation.

In actual shooting, you can follow the following steps.

(1) Set an exposure compensation value, such as -2EV, according to the scene to be shot and the darkness of the silhouette to be reflected.

(2) aim at the details of bright clouds or water in the sky, so that this part can be correctly exposed in the picture and present certain details.

(3) Press AE-L/AF-L button to lock the exposure parameters.

(4) Move the camera to re-compose.

(5) Focus on the subject and press the shutter to complete the shooting task.

(6) Preview the photo, adjust the exposure compensation value according to the effect, and then shoot again until the satisfactory effect is obtained.

When shooting, you can also add atmosphere to the picture by setting the white balance to "cloudy" or "dark" mode.

6. Reduce the exposure compensation, so that the background becomes a prominent flower with darker tone.

When shooting flowers, if the subject is in front of the dark background, the exposure can be appropriately reduced by reducing the exposure compensation, and the background is shot in pure black, thus highlighting the subject in the foreground.

It should be noted that the spot metering mode should be adopted to measure the light in the relatively bright area of the subject in the foreground to ensure the accurate exposure of the subject.

When shooting, the set exposure compensation value depends on the area of dark background in the picture. The larger the area, the greater the exposure compensation value should be.