Why does SLR backlighting turn gray (especially under the blue sky)?

First of all, if you want to show the picture of blue sky and white clouds, the photographer must shoot with his back to the sun. If you face the sun, the sky will be pale, which can't be corrected anyway. If you want to darken the blue sky and highlight the cloud scene, you can stretch the curve or use a polarizer later. As shown in the picture, the blue sky effect with the back to the sun and polarizer.

Backlit the sky.

Second, for portrait photography, backlight photography has a unique performance.

1, some photographers like a lens without a hood, so that the sun shines directly on the lens, and the portraits taken are very hazy.

As shown in the figure (reproduced online, not photographed by myself)

2. Most photographers want to use sunlight to outline characters, and at the same time avoid direct sunlight to keep their eyes open. Most of them want their assistants to fill their faces with reflectors. At the same time, pay attention to using a hood to prevent sunlight from entering the lens, so that there will be no hazy feeling in the above picture. As shown in the figure (reproduced online, not photographed by myself)

3. When there is no assistant to hit the reflector, you can also hit your face with the overhead flash. As shown in the figure. The intensity of flash should be controlled, and enough is enough. Some shadows should be reserved on the face of the characters to increase the three-dimensional sense. This film was shot at the Beijing International Photographic Equipment Expo. There was a sidelight spotlight at the scene, which just lit up the edge of the hair and had a deep shadow on the face, which was the result of the appropriate supplementary light from the overhead light.

In short, photographers should master the skills of backlighting, foster strengths and avoid weaknesses, and shoot the expected results.