What effect will there be if there are very few black and white jumps in the transition level of the scene on the photographic screen?

Hard tone.

Hard tone refers to a tone that is mainly black and white on the screen, with few gray and other tones appearing, with greater contrast and fewer layers. Because the effect of hard tone can give people a strong visual impression, showing a sense of power, intensity and excitement.

Hard tone is used to express subjects with strong contrast, such as silhouettes, contours, forms, etc. Therefore, there are very few transition levels in the scenery on the photographic screen, and the black and white jumps will form a hard tone effect.