Plants see through the leaves, and they see in color (blue, red, ultraviolet, infrared). They perceive the nights and the days. They see the other plants, the shadows.
Plants know the direction, quantity, duration and color of light. They also capture short electromagnetic waves (which is not the case with humans). But they do not see in pictures. They translate light signals into action (growth, flowering, germination, etc.).
Some experiments:
Darwin, father and son, on the effect of light on plant growth and the role of the bud in the perception of light.
Julius von Sachs on the effect of the blue color.
Garner and Allard on the role of light intensity and duration on flowering tobacco.
Experience on the impact of red and distant red (evening color, etc.) on flowering and the role of phytochrome (switch that activates growth as a function of light).
Koorneef at the University of Grooningen in the Netherlands, on vision, from the genetics of the ear-mouse cress. The latter has 11 photoreceptors belonging to 5 different classes, a complex system because it is linked to food.