Bonjour Philippe... et oui, c'est tres simple. I better do this in english. The deardorff has pins that locks the back and super easy to switch to vertical and back. Great camera and I will be arriving in NIce on April 22nd. pay ahead and meet me there and i will give you lessons for an afternoon. Staying in Juan les Pines for 6 days and the extra bag would only cost you $125 CDN. Think about it.