CamRanger generates its own WiFi and the connection between iPad and camera makes shutter-firing instantaneous.
I actually drive my camera
from my iPad (by touch and using the CamRanger software installed on the iPad) when shooting from a tripod or during a shoot with a client. It means that I have a very large touch-screen and can see results instantly at full iPad size.
This is the walk-about remote shutter release which I put together:
Tap on the iPad to focus and to shoot: the attached flash was fired by radio from the camera and all other flash-heads are sychronized by radio.
I believe CamRanger works at more than 60 feet from the camera but I have not tested it at further distances than that.
The image posted here is the actual one which you see being taken by the remote camera at the instant when the flash fired in this photo.
