So, we had a pretty big aurora the other day, so I used it as a chance to try out the A7s's video at night. I am very much a novice when it comes to video, so please ignore the poor editing and all else. I did not use any picture profiles or do any grading. This is just out of the camera. I worked in Resolve, but only have lite, so I did not do any noise reduction etc. The color was close-enough for me to be satisfied with it. The video was just for my friends, so I did not take it too seriously!
The performance is pretty stunning though. This is what a big aurora actually looks like, but it is rare to see it so large. Most photos of the aurora you see are long-exposures, so you are seeing far brighter and more dramatic views than you do with your eyes. In this case, however, the view is quite similar to how we saw it...the combination of 25fps and a large and active aurora also allows you to see the true motion, which is something the photos don't always do justice to.
I think the ISO was around 64,000-80,000. It starts off darker, before getting more active.