If you pre-focus the cameras (using a half push of the shutter button before fully depresssing), both cameras are quick. But many people can't shoot that way; they just want to push the button all the way. In full auto-focus mode (just pushing the button), the Nikon only requires 1/4 second or so to capture an image. The Canon needs nearly 3/4 of a second.
im looking for a camera that has the abilities for a long zoom, HD video, and stuck between these two...
i do prefer the AA batteries vs a battery pack but i also dont want anything overly laggy! PLEASE HELP the nikon looks nice but im having a hard time deciding between them because i really cant get enough info on how much faster the nikon is! HELP!