How to determine the color temperature of color film?

Remember that film is divided into daylight type and lighting type, which correspond to different illumination and color temperature occasions respectively. In order to avoid the deviation of color expression of sunlight in the morning and evening, the color expression standard of color film is ether sunlight. According to the sunlight from 9: 00 a.m. to 3: 00 p.m. and the color temperature of 5500K, the color film is called daylight film. Based on the color temperature of ordinary incandescent light source, the color temperature of optical film is 3200K, which is suitable for photography of subjects with light as light source, such as advertisements, still life, lighting portraits, etc.