I have used this for both photography and for video and it is awesome for videos. The large aperture wide angle view on a video is really something to praise for, because it is especially good during low light video filming.
Price is on the dear side but it is worth every single cent of it. Trust me, this is a tough lens and it can withstand most conditions you throw at it.
My only complain is the larger than usual filter thread size of 82mm. Other than that, this is highly recommended.