How to accurately measure the light of a person's face by spot metering in backlight portrait photography?

You can use spot metering to measure the light on a person's face from the following aspects:

1. In terms of photometry, it is recommended to use spot photometry on the face, and at least one exposure should be added, because face photometry will not be very accurate even if it is backlit, especially when shooting portraits with strong backlight.

2, pay special attention to the shadow under the nose and neck, understand that sometimes backlight will be more beneficial than smooth light, you can use a reflector to add highlights to your eyes.

3. Make use of the warm sunshine in the afternoon to find the existence of light and shadow, and use spot metering (strong light ratio) for focusing metering, so as to truly master the correct exposure value when shooting, shoot in aperture priority mode (Av mode), and measure the exposure value with M-scale on cloudy days to adjust the white balance (high color temperature).

Extended data:

Other points for attention in face recognition.

1. Because shooting in the bright sun, people are directly exposed to the sun, and strong shadows appear under the nose and near the neck. Therefore, reversing the position of the camera and the person eliminates the shadow on the face, and the light is very suitable. Coupled with the reflector, the skin color is more beautiful.

2, pay special attention to the shadow under the nose and neck, you can use a reflector to add highlights to your eyes. But when taking portraits, because of the big contrast, it can't be said to be very suitable. The legend is also illuminated by the strong light in front, and strong shadows appear under the nose and around the neck. And because the characters are illuminated by strong light from the front, their expressions look a bit dazzling.

3, due to reflection, hair will also show highlights. At this time, the camera will regard the indirect light irradiated by the character as exposure value. If you feel dark, you can add some exposure compensation to brighten it. Backlight+reflector shooting-Flexible use of the advantages of backlight, professional use of light to maintain the state of backlight, adding reflector between camera and characters.

References:

Baidu encyclopedia-spot metering