Canvas white pigment and calcium carbonate is rather brittle and susceptible to cracking. As lead-based paint is poisonous, care has to be taken in using it. Various alternative and more flexible canvas primers are commercially available, the most popular being a synthetic latex paint composed of titanium dioxide and calcium carbonate, bound with a thermo-plastic emulsion. Many artists have painted onto unprimed canvas, such as Jackson Pollock, Kenneth Noland, Francis Bacon, Helen Frankenthaler, Dan Christensen, Larry Zox, Ronnie Landfield, Color Field painters, Lyrical Abstractionists and others. Staining acrylic paint into the fabric of cotton duck canvas was more benign and less
Christopher H. Martin of Chris' 9-11 flags as the recipient of the Joseph Prize for Human Rights in 2002. Martin exhibits in eponymous galleries in Dallas, Texas, Santa Fe, New Mexico and Aspen, Colorado. He is also represented in galleries across the country in Chicago, San Francisco, Sarasota, and Los Angeles. Christopher H. Martin Christopher H. Martin (born 1969) is an American artist working with paintings on acrylic and canvas mediums. A self-taught artist, he is known for his signature technique of painting in reverse, using acrylic paint on a clear sheet of acrylic. Martin modernizes the 14th century technique of "Verre Églomisé"