So I got the camera a little over a week ago and have had some work and shoots that have kept me tied up. I was very excited to get some downtime and put this camera to the tests in the dark. It took a hit from C5D in a somewhat unfair test. Now I didn't compare it to another camera, these shots are my own, but I was shooting with an Epic shooter for some of the night and side by side shots showing how similar the Sensor is (it's the same), and showing differences in compression ratios between the two cameras.
My challenge was to shoot everything at 800 ISO when possible (which it was for all but several shots) and those shots I didn't shoot above 1000. I found very little noise in the image. I got to edit the raw footage through Premiere Pro CS5.5 at 1/4 resolution (which still looks amazing) on a 4K timeline. The machine I edited on was a dual core, Imac (older system I owned) with 4GB of ram. I was simulaneously coloring in RCX and importing straight to the timeline with no encoding. Very fast and effective. You simply load the .rmd's (color profiles that save once edited in RCX) and you color is brought over.
This is not meant to be a super tight edit I was trying to play with different frame rates and get as little noise as possible. It's quick and rough but it shows that in most cases with little to no light at all the camera still performs. I love the way it handles light. Some of the weird refractions were caused by a cheap UV filter. Upgrading here shortly.
I apologize in advance if I embed it incorrectly. Watch it in 1080p, it's much better.
Canon 50 1.4
Canon 24-70 2.8L (one shot only)
Canon 70-200 2.8L IS II
Tokina 11-16 2.8
Canon 35 1.4L