The task of painting, for example, was to define precisely what kind of object a painting truly is: what makes it a painting and nothing else? The nature of a painting is a flat canvas object onto which colored pigment is applied. Elements such things as figuration, 3-D perspective illusion, and references to external subject matter were considered extraneous to the essence of painting and thus removed.
Some have argued that conceptual art continued this dematerialization of art by removing the need for objects altogether, while others, including many of the artists themselves, saw
The first wave of the conceptual art movement extended from approximately 1967 to 1978, influenced by early concept artists like Henry Flynt, Robert Morris, and Ray Johnson. Conceptual artists like Dan Graham, Hans Haacke, and Lawrence Weiner have proven very influential on subsequent artists, and well-known contemporary artists such as Mike Kelley or Tracey Emin are sometimes labeled “second- or third-generation” conceptualists, or post-conceptual artists.
Contemporary artists have adopted many of the concerns of the conceptual art movement. While these artists may or may not identify themselves as conceptual artists, ideas such as anti-commodification, social and political critique, and ideas/information as medium continue to have a place in contemporary art, especially among artists working with installation art, performance art, net art, and digital art.