Since the advent of printing, the sale of reproductions of pious works has been a major element of popular Christian culture. In the 19th century, this included genre painters such as Mihály Munkácsy. The invention of color lithography led to broad circulation of holy cards. In the modern era, companies specializing in modern commercial Christian artists such as Thomas Blackshear and Thomas Kinkade, although widely regarded in the fine art world as kitsch, have been very successful. Bible Verse Wall Art
During the development of Christian art in the Byzantine Empire (see Byzantine art), a more abstract aesthetic replaced the naturalism previously established in Hellenistic art. This new style was hieratic, meaning its primary purpose was to convey religious meaning rather than accurately render objects and people. Realistic perspective, proportions, light and color were ignored in favor of geometric simplification of forms, reverse perspective and standardized conventions to portray individuals and events. The controversy over the use of graven images, the interpretation of the Second Commandment, and the crisis of Byzantine Iconoclasm led to a standardization of religious imagery within the Eastern Orthodoxy.