Hi,
I have been reading this post, and I have two questions: 1.- why not to use the sigma lense on the canon 5D III? (if you used on the 7D you could have been used it on the 5D III too, because the quality of the fixed 50 mm 1.4 Zeiss lens is better than zoom sigma...) 2.- I can understand about the resolution, etc, etc... but do you think all this is more important than a good story for a film or a good theme for a video or documentary? for example, any Canon (60D, 7D, 5D ,...) IS GOOD ENOUGH TO MAKE A FUTURE FILM this is completely proved by filmakers around the world, even Hollywood used them as a secondary cameras in accion films like The Avengers, Iron Man, or drama films like The black Swan.
I feel this point should be a problem for engineers and not for filmakers or video makers about how make the cameras to be betters or how to find the best way to get the best from them, I feel that we should be planning good stories... THE CAMERA IS JUST A PART OF A PRODUCTION, anyone can have an Arri Alexa or a Genesis but if your story is not good... you could have the best resolution image, but that my friends is nothing... but now, you could have a nice and cheap good camera (the one you like: GH2, Canon, BlackMagic, GH3, I Phone, etc, etc...) and even low resources, but if your story is good... even Hollywood could buy it (for example: LIKE CRAZY, budget 250.000 dollars and sold by 4 millons dollars to Paramount Pictures, I read some guys writing about moire, and alliasing, etc in this film, but I repeat: SOLD BY 4 MILLONS DOLLARS...)
Technology is a never ending issue, falling in this "corporate game" is not good, we are the user of the technology and that´s it.! you can use the one you like more and is ok!! more resolution, less moire are just secundary points because all this cameras WORKS FINE!! if you know at least the strenghts and weaknesses of your camera you can do a good job!, a good director of photography can do a good job with all this cameras, no because of the camera, is because HE KNOWS WHAT MAKES... we need to learn about photography, directing, and writting and the camera will be the last problem in our carrer...
be fine!