John Seymour is an applied mathematician and color scientist, working as a consultant since 2012 under the name “John the Math Guy.” John currently holds twenty-nine US patents, has authored over twenty-six technical papers, has presented at twenty-seven conferences, and has keynoted at six conferences. He is an expert on the Committee for Graphic Arts Technologies Standards and ISO TC 130. He is currently on the board of the Technical Association of the Graphic Arts, and the Inter-Society Color Council, and serves as an advisor for the Ryerson expanded gamut study. He writes a blog which is described as “applied math and color science with a liberal sprinkling of goofy humor.”
Between 1992 and 2016, John was responsible for advanced product development for QuadTech, a manufacturer of process control equipment in the print industry. Prior to working with QuadTech, John worked as a scientific programmer in medical imaging, satellite imagery, electron microscopy, and spectroscopy. He holds bachelor’s degrees in mathematics and in computer science from the University of Wisconsin-Madison.
Sunday, 4:00 pm – 5:00 p.m.
I Never Met-A-Meric I Didn’t Like
Metamerism is the often overlooked consideration when utilizing expanded gamut as a cost effective replacement for spot color. Despite excellent color management, packaging produced with spot colors sitting on the shelf alongside one printed with a combination of CMYKOGV inks may match under some lighting but not under others, potentially affecting consumer behavior. Get the get the facts of expanded gamut, lighting, and metamerism.