When first equipping the item, a "deactivate button" appears, along with a transparent HUD covering the screen, making it look like an advanced spy gear.
On the lower right corner, there is a series of buttons, (+), (<), (>), and (-). The (+) button "zooms in", which makes the camera go a few studs ahead of you. The (-) button makes the camera zooms out to the player's original position. The (<) button moves the camera's position to the left, and the (>) button moves the camera's position to the right.