I have a - perhaps - naive question about the possibility or controlling the focus with a remote control in Canon t3i or t4i.
I would like to select manual focus (so that the camera would be excluded from the job) and change the focus from a remote control without touching the lens and preventing shaking.
Has Canon released such a lens?
Otherwise, is it possible in t4i or other camera with autofocus?
Sorry if it is a nonsense.