Which of the following artists is known for using sfumato?

Leonardo da Vinci is renowned for his use of sfumato, a painting technique that creates a soft transition between colors and tones, resulting in a hazy or smoky effect. This technique allows for a more realistic representation of subjects, as seen in works like the "Mona Lisa." Sfumato enables the blending of edges, reducing harsh contours and enhancing the three-dimensional quality of the figures in his paintings. This method was innovative for its time, contributing to the atmospheric depth and subtlety that characterize da Vinci’s masterpieces. Understanding the significance of sfumato helps appreciate how it transforms flat surfaces into lifelike depictions, which is a hallmark of Renaissance art.