Yves GENTET is a physicist in laser science, holography, optical calculations and computers.Since 1995 he has developed a family of new silver halide holographic emulsions called: "Ultimate" - the clearest and brightest material ever developed in true color holography.Ultimates - holograms of objects recorded by Yves GENTET render true colors and can be seen from up and down as well as left to right with a 180 degree field of view.