Franz was the first lecturer on the daguerreotype process in Moravia. He started experimenting already in 1839, the same year that Louis Daguerre developed this method of taking photographs.[2]
He also arranged exhibitions. The fact that this photographic process took roots in Moravia is attributable to him.[1] Franz is believed to be the author of photography of "Corpus Christi" taken in Brno on 10 June 1841, which is the first reportage photography in the Czech lands and one of the first photographies worldwide.[3] He is also believed to be the author of the first portrait photos in the Czech lands.[3] In 1841 he made photo portraits of Brno Bishop František Antonín Gindl.[4]
In Olomouc, Gregor Johann Mendel was one of the most favourite Franz's students. Franz immediately recognized his great talent, and they soon became good friends. They debated a number of topics, such as the origin of the solar system and of life as such, the development of Goethe's philosophy and the purpose of human life. Franz also provided the newest scientific literature to Mendel and recommended him to enter the St Thomas's Abbey, where Mendel later defined his famous laws of inheritance.[1]