sun print การใช้

Her experiments with making sun prints, a photographic developing process dating back to the early years of photography in the Nineteenth century, earned her the distinction of having her work exhibited at the Royal Photographic Society in Bath, England.
His earliest surviving color prints are " sun prints " of pressed flowers and leaves, each of the three negatives having been made without a camera by exposing the light-sensitive surface to direct sunlight passing first through a color filter and then through the vegetation.