The photography in New York and La Rochelle has been done by using a large, high-resolution Lumière Technology scanner. The Jumboscan™ six-band multi-spectral scanner is coupled with a spectrometer. It can capture very nearly the complete spectrum of colors (95% instead of the 50-70% as captured previously with numeric or silver processes.)

This process was developed in partnership with the Munsell Color Science Laboratory at the Rochester Institute of Technology, USA.

It provides such high resolution reproduction that it is no longer possible to detect differences between the original watercolors and the copy.