How I shoot
This has nothing to do with editing, but every filmmaker fights about it, so I might as well tell you what I shoot with and my philosophy about cameras.
In 2008, Canon revolutionized filmmaking by creating the 5D DSLR camera. It was a camera that shot stills, but magically, shot HD video as well. All of a sudden, it turned every person into a photographer and cinematographer all in one.
But there is this saying in film. What is the difference between an amateur and a professional filmmaker? Well, an amateur has more expensive equipment.
The camera won't make a difference if the person using it doesn't understand composition, light, and some key technical aspects of photography. I've shot on cameras as cheap as a few hundred dollars all the way up to units over 300k. My thoughts? It's the person behind the lens that mostly that makes the difference.
For weddings, currently I rent a Canon C100 with mostly L Series optics and a few Rokinons. I don't own cameras because they go out of style so quickly that it can get very expensive to repurchase cameras over and over. And right now, I see many filmmakers moving towards Canon's Cinema line or small units like the Sony A7S.
Some people may be interested in 4K, but as a guy who has shot a lot of 4K, I can tell you that it poses some storage issues at the moment. The files are rather large. Thankfully, the C100 puts out a very clean, very beautiful image, that is still small, storage wise. A friend of mine just shot a feature film on the C100, and when I went to see it play at Sundance, it was blown up on a big screen and still looked amazing. So feature films are being shot on the C100. They're beautiful for weddings and are even a step up from most of the cameras that are being used for life events right now.
Having said all that, again, it's the person and the experience behind the camera that will count the most. The right cinematographer can take an iPhone camera and blow your mind.