What does the Greek word "kalos," related to the calotype, mean?

The Greek word "kalos" translates to "beautiful," which is fundamental to understanding the aesthetic principles underpinning the calotype process. Developed in the 19th century by William Henry Fox Talbot, the calotype, which means "beautiful picture," was one of the early photographic processes that focused not just on the technical aspects of capturing images but also on the artistic quality of the resulting photographs. This emphasis on beauty aligns with the definition of "kalos," highlighting a significant aspect of Talbot's vision for photography as an art form. The other options, while related to different qualities and concepts in art and photography, do not capture the essence of "kalos" specifically as it pertains to beauty and aesthetic appeal.