How well does cropping in to a moving shot with some rolling shutter work on the GH4? I ask this because I do a lot of run and gun, handheld street video and my 5dmk2 works well except for some annoying rolling shutter issues. I'm looking for another camera now. I am sure the Sony A7s has a nicer image, especially in dark situations but since I shoot in daytime and all of my stuff gets compressed on the web anyway I was leaning towards the GH4 for the ability to crop and solve those rolling shutter issues as well as the issue of shooting with only one camera and not having enough shot sizes to work with.
Thanks in advance.