Le Fotodiox est bien une copie non autorisée. http://www.fredmiranda.com/forum/topic/1452716?b=2 :
Warning concerning the Fotodiox Pro Pronto
A Techart representative has informed us that the Fotodiox Pro Pronto is an unlicensed fake of Techart's patented design and is produced by a company that "is famous for copying people's products without licensing".