Sony A6300 slow motion test video of the rain at 120fps at 1080p. The camera set-up was with a commlite canon adapter so that they were able to use a canon 24-105L lens to capture the video.
The video editing software was Final Cut Pro to combine the scenes and FCPX LUT FILM for the color grade to get the effects.
The Sony A6300 can be found here. The Commlite Canon lens adapter can be found here.