What does Gao Fancha mean?

The contrast range of black and white images is described by the technology (British tone) on the scale color scale, and the interval from black to white is equal. Gao Fancha images have little or no intermediate tones between black and white. Such images are clearly defined and have the same characteristics as posters. Gao Fancha images can be obtained by shooting Gao Fancha scenery with standard photographic materials or shooting standard scenery with Gao Fancha materials. "Gao Fancha" or printed film or photographic paper has the largest contrast, and its image is only black and white, with no intermediate tone. Gao Fancha images are often used as intermediate films when copying photographic works with special effects.