The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Zooms in significantly more to look at a gate, entrance or adjascent building Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up See below to give you some idea on angles of Megapixel HD Cameras:įor seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out"Ī great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned.