Lomography posted a short film on Vimeo made with a "Canon 5D Mark III using the first Petzval sample lens". It's a compilation of film and photos. It's called: "A Night Out with the Petzval (D)SLR Art Lens".
The first comment on Vimeo was nice:
"Is it possible to have a few more details about the way you shoot that video like iso, shutter speed and aperture of the lens ? I'm bit scared because most of the footages looks extremely soft and dark (wich is very strange using a 5DMKIII and a f2 lens).On the good side, bokehs and DoF are beautifull but I'm really worried about sharpness and speed so far."