impressionist paintings that were produced outdoors and not in the studio are called
En plein air Artists have long painted outdoors, but in the mid-19th century, working in natural light became particularly important to the Barbizon school, Hudson River School, and Impressionists.
Indian painting Around the 1st century BC the Shadanga or Six Limbs of Indian Painting, were evolved, a series of canons laying down the main principles of the art.[2] Vatsyayana, who lived during the third century A.D., enumerates these in his Kamasutra having extracted them from still more ancient works.