Traditional Culture Encyclopedia - Photography and portraiture - When shooting indoor still life (ceiling lamp) with digital SLR camera, the sensitivity and aperture value are relatively large. Why is the photo still dark?

When shooting indoor still life (ceiling lamp) with digital SLR camera, the sensitivity and aperture value are relatively large. Why is the photo still dark?

The illumination of 40W ceiling lamp will not be higher than 50LX, which is very dark in photography. After prolonged exposure to 1~2 seconds, although the granularity will decrease, there will still be color cast. So it is best to use a flash or a high-power incandescent lamp.

Please refer to the following article.

Portrait photography under fluorescent lamps and incandescent lamps

According to the characteristics of China people's skin, there will also be a piece of paper, which will be adjusted based on the light blue white balance in front of the camera, so that people's skin (especially ruddy face) in the photos will look a little spirited. It is determined that in exposure value, if the light distribution at the shooting site is uniform and the brightness of the person is similar to that of the background, it will also be exposed automatically (focusing on the central average metering). If the average time distribution of the shooting scene is more accurate than automatic exposure, exposure value can be used, and the following three methods can be used: zoning photometry. Second, it is measured when it is used. Third, use 18% grey board.

Using zonal photometry

The pictures taken by the digital camera are divided into certain regular N partitions, and the exposure value of these partitions are measured respectively. The digital camera comprehensively calculates the appropriate exposure value according to these exposure value. This exposure value is actually automatic exposure, which is more accurate than general photometry.

In-service photometric method

There is about 2% partial metering in the center of the photographic picture, and some digital cameras can also use spot metering instead of partial metering. Partial metering, which is about 10% in the center of partial metering's shooting picture, can also correspond to most shooting contents for American photographers. Use spot photometry to measure the time and face of local characters, and get the correct exposure value. If your digital camera measures light by area or spot, and this part is also close to the person being photographed, the face of the person photographed with the digital camera will be locked and returned to exposure value for metering and partial shooting.