@Bedduinnn
You have to learn to work with the limitations :

For serious production work or longtime filming in HD resolution, you need a DSLR with compact flash interface (5dIII, 5dII, 7d)
All the DSLR's with SD interface have their limitations.
But if you know them and you know your way around in post processing DNG files, you can get badass picture quality

First, better forget 16:9 aspect ratio, 1:2,40 is very nice too

(and needs less bandwidth)
With a 6d you can record about 16 seconds in 1728 x 724 resolution, which scales up to 1920 x 800 without problem and in superior quality.
And 16 seconds is a very long clip time, watch a movie or TV show and count the seconds you are seeing the same shot without switching to another shot... I bet there aren't much shots longer then 16 seconds
