Prompt: Realistic computer graphics representing two versions of the image of one glass of water filled exactly half full. On the left, the glass is illuminated by warm sunlight playing in the bubbles of drinking sparkling water. The background is light, with the image of positive elements. The emphasis is on the fact that the glass is still half full. On the right is the same glass in a dark room with dim light, the water is not carbonated. The focus is on the empty part, the background is gloomy with shadows. The sharp visual contrast of the two halves separated vertically. Photorealistically executed details. The color palette highlights the difference in perception.