I know this may have been beaten to death but im new to the forum.. Whats better 7D vs 5Diii for video? Pros vs Cons
virtually no moire or aliasing. That is a huge advantage.
Excellent low light performance for both video and stills
Audio monitoring 3mm plug
Full frame makes a difference. Although 7D sensor is super 35, film cameras often will use very wide aperture lenses, equal to f/1.4 . DOF at f/2.8 is very shallow on FF, not so much on APS-C
Audio levels can be changed while filming with 5DIII. This is important.
Although soft out of camera, the 5DIII footage can tolerate quite a lot of sharpening, and sharpens quite well in post.
However, if video is your main concern. A C100, or even C300 (almost 3x more $) is a better choice, if you want to stay in the Canon camp. Non Canon options abound: Sony FS100, FS700, but lens adapters can be a pain. Black Magic has fans too.
Personally I'm tempted by the C100, maybe if there's a price drop I can swing it. The C300 is just too much for me now.