The other thing is field of view. Field of view refers to extent of the scene that is captured from left to right and from top to bottom. How broad a part of the scene is captured by the camera is what field of view refers to and we can always have very narrow cone but very detailed view, or we can have very broad cone captured by the scene but loose on the detail. So, field of view of course one would like to have very large, in particular one would like to have ideally the entire richness of degrees, if possible. Now this refers to the length and breadth, the width and the height.