Adjustment of exposure parameters in portrait photography

Lead; Portraits are the easiest to shoot, but they are difficult to shoot well. Because men, women and children are different in height, size, appearance and expression, and people can arrange many positions in the picture, it is impossible to shoot different people in the same way.

The adjustment of exposure parameters in portrait photography should first set the ISO and white balance of digital camera before shooting. Generally, ISO can be set lower when the brightness of light permits (such as ISO 100), which can make people's skin look more delicate when taking portraits, especially PLMM. When shooting portraits, if the light brightness is not enough, you would rather use a tripod or flash, and try to use a high ISO setting as little as possible. In the white balance setting, you can set it to? Automatic? , can also be set according to lighting conditions.

If you take a portrait under fluorescent lamp or incandescent lamp, according to the skin characteristics of China people, you can also use a piece of light blue paper as a standard to adjust the white balance in front of the camera, so that people's skin (especially face) will be slightly ruddy and look energetic. When determining the exposure value, if the light distribution of the shooting location is relatively uniform and the brightness of the person and the background is not much different, you can use automatic exposure (focusing on the central average metering). If you want to obtain a more accurate exposure value than automatic exposure in the case of uneven light distribution at the shooting site, you can use the following three methods: First, use zoning photometry. Second, use spot metering. Third, use 18% grey board. Using zonal photometry

The digital camera divides the shooting picture into n partitions according to certain rules, and measures the exposure value of these partitions respectively. Then the digital camera comprehensively calculates the appropriate exposure value according to these exposure value. This exposure value is actually automatic exposure, but it is more accurate than ordinary photometry.

Use spot metering

Measure the light at about 2% of the center of the shooting picture. Some digital cameras don't have spot metering, so partial metering can be used instead. Partial photometry measures about 10% of the light in the center of the shooting picture, which can cope with most of the shooting content for our photographers. When using spot metering or partial metering, you should aim at a person's face to get the correct exposure value. If your digital camera doesn't have area metering, spot metering and partial metering, you can also get close to the subject, aim the digital camera at the subject's face for metering and lock the exposure value, and then go back to the original place to shoot.

Use 18% grey cardboard.

On the premise that our camera can provide the ability to lock the exposure reading, we can do the following operations: First, read the gray board data at close range and press the exposure lock. Then, while locking this exposure in place, aim the camera at the scene you want to shoot and take the next picture. If the light illuminating the scene is the same as the light read from the gray board, then the exposure is correct.