The Rode Videomic NTG looks very interesting. I like the look of Sony's proprietary shotgun for the A7 series because it eliminates the flimsy 3.5mm connection, and it sends a digital signal to the camera, making it the sound much cleaner. This setup makes for a more robust compact setup.And if Canon doesn't deliver & Mono is fine for you, the Rode videomic NTG is a very fine tool. I wanted to buy some NTG4 or maybe the NTG5 but I was not shure if an XLR solution was the right thing for me (to bulky) and then came the videomic NTG: It has a physical level control (Knob without any (mechanical) steps) , no digital connection to the camera (except the camera has a USB port which accepts such devices) - but it can be used as a USB microphone on a PC too.
I am new in audio but I think I know a little bit about what it has to sound and this is the first microphone where I accept my own voice Sound is clean, rich and without any artificial "spoken through a tube" artifacts.
But the Rode looks like the next-best option.