Sports films, racing, documentaries and viral videos.
I shoot a lot of sports documentaries and also came from DSLR, 4 years film making on a Canon 7D with CineStyle profile and ML. It was a great camera for sports films: 60fps slow motion, weather sealing, has many lenses, run & gun setup, cheap battery, and storage. The colour is great too! The only problem I have is that the footages are ugly in low light, and I needed more dynamic range; plus I feel that my 7D is about to give up on me!
I badly needed an upgrade. My choices were BMPCC, BMCC4K, A7s and FS7. After weeks of research and rentals, I find the Blackmagic cameras were too stressful to use. On the other hand, the Sony FS7 they was the perfect all around camera (and with the help of Philip Blooms review), but I cannot afford one yet. SO... I ended up with the Sony A7s! It was the best decision ever! Perfect for my sports films. Lightweight, easy to use, 4k capable, 120fps at 720, Slog2, cheap batteries, wide dynamic range and crazy low light performance!
My next agenda is Odyssey 7Q+, a few lenses and an audio system upgrade. I hope you consider the A7s! :)