If the player is in First Person Mode (Or just make a script that force it to use it), it would have the Digital Video Camera Recorder style. Like the horror games nowadays. I know its possible but I don't know how to make it...
I think it would be an Gui, with an transparent background with the camera icons on it to make it look like you are the "camera", find an view of an camera from google and use that.
to do this get a gui and make a frame looking gui with it and add designs and add the rec text.
(in reply to MysticalGod) You could also use the picture from the security cameras that people have put out. Just search "Security Cameras" on free models and you'll see a seat with like 6-8 cameras. When you're watching the cameras it looks like a real camera. You might also get some codes that may help you from that script.