Photographic tone filter

In photographic film, the purpose of adjusting the color temperature is to ensure the accurate color effect and make the photos present true colors. Generally speaking, the methods to adjust the color temperature include adding a color temperature conversion filter in front of the lens or using a light balance filter.

Color temperature conversion filter is a method to adjust the color temperature by placing a filter in front of the lens. It selects the appropriate color filter according to the color temperature of the light source and the characteristics of the film. Color filters are divided into cool colors and warm colors, which are used to reduce or improve the color temperature of photos respectively. A cool color filter (such as a blue filter) can lower the color temperature when shooting a warm color light source (such as yellow light), making the photo appear more neutral or cool. Warm color filters (such as orange filters) can increase the color temperature when shooting cold light sources (such as blue sky), making photos appear warmer or yellowish.

The light balance filter is also a method to adjust the color temperature. It corrects the color temperature of the light source by using a specific filter when shooting. The choice of light balance filter is also based on the color temperature of light source and the characteristics of film. For example, using the blue light balance filter can correct the warm tone caused by indoor yellow light and make the photo more neutral.

When using color filter or light balance filter, you need to choose according to the specific shooting environment and the required effect. In practice, the photographer can adjust the color temperature according to the light source of the scene and his own aesthetic needs. In addition, the best choice of color filter or light balance filter can be determined by trial and error and experiment.

It should be noted that color filters or light balance filters can also be used in digital photography, but they need to be adjusted in post-processing. In digital photography, the effect of color filter can be simulated by setting white balance, and the color temperature can also be adjusted by using later software.

In short, in photographic film, the color temperature can be adjusted by adding a color temperature conversion filter in front of the lens or using a light balance filter, so that the photos can present accurate color effects. The selection and use of these methods need to be adjusted according to the specific shooting environment and the required effects, and at the same time, they can be freely played according to the personal aesthetic needs.