During which time period were artists keenly interested in using the golden ratio in their paintings

The golden ratio has been used in art and design throughout history, but it became particularly popular during the Renaissance period in the 15th and 16th centuries. Artists such as Leonardo da Vinci and Michelangelo were known to study the golden ratio and incorporate it into their compositions. This period is often considered a time of great artistic and intellectual exploration, which may help to explain the heightened interest in mathematical proportions such as the golden ratio.