Why is light so important in Tintoretto’s paintings?

In the work of Tintoretto, light serves as a fundamental tool for defining form, heightening emotional drama, and creating a sense of movement within a composition.1

Tintoretto’s approach to light evolved throughout his career, often reflecting his interest in the dramatic and visionary potential of the medium. Key aspects of his use of light include:23

• Defining Form and Space: Tintoretto utilized light to pick out specific forms while casting others into darkness, which helped structure his compositions and suggest depth. In his later works, he moved away from structures defined solely by perspective, instead using light to dissolve color and create expansive, multiplied spaces.14
• Heightening Drama: By employing dramatic, sometimes "livid" or "vaporous" light, he imbued his scenes with intense romantic pathos and emotional power. In his masterpiece, the Last Supper, the head of Christ is bathed in a light that also illuminates smoky lamps, creating a mysterious and miraculous atmosphere.41
• Visionary Quality: As his style matured, Tintoretto achieved a luminous, visionary quality, particularly in his depictions of religious subjects. His late works often feature figures immersed in an incandescent, hazy atmosphere, reflecting a deep spiritual bent and a focus on the contemplative life.24

These techniques allowed Tintoretto to move beyond traditional Venetian colorism, blending form and color into a unique, expressive idiom that emphasized the dramatic and the fantastic.13