Canon USED to push the technology to new levels... They are just into a huge hiatos.
I have some old Canon gear, and it was far ahead their time. Now is just Nikon last gear that has real technology and Sony recreating what we used to have into a simpler way.
Nikon has their .NEFs files and a pretty awesome DR. Lenses are kinda expensive tho, but the quality is amazing and the copies of each lens is very controlled, so you don't have many quality variations. I shill to Nikon, but I have to say Fuji is going to the same path and even further with their MFs.
btw colours from Nikon adobe colours are pure gold. and their raws have everything you want in a camera.
Also, Nikon hide some very good unknown jewels. Like their own sensors (Nikon D3200, and entry level with a sensor that is truly amazing), and lenses you couldn't believe the quality, made like a tank and sharp like a brand new knife (check for AF-S 80-200mm2.8 used by NASA).