When he passed away last year, Arnaud Darmont was finalizing the 2nd edition of is well-known book on HDR imaging.

The book is now available at SPIE: http://www.spie.org/Publications/Book/2512263

Arnaud was befriended with many of Caeleste.  He was considered an expert in image sensor testing and image processing.

Posthumous book of Arnaud Darmont on HDR imaging