In this video conservator Devi Ormond and researcher Teio Meedendorp talk about the painting 'Portrait of Vincent van Gogh' by John Peter Russell. This video is part of a series on the research project Van Gogh's studio practice. The Van Gogh Museum, the Cultural Heritage Agency of the Netherlands and Shell form an innovative, multidisciplinary team pursuing a collaborative research project in art history, technology and natural science: Van Gogh's studio practice. The progress of the research can be followed on the blog www.vangoghsstudiopractice.com