The relationship between
Resolution **can be thought of as being like the relationship between your monitor's display resolution (the physical pixel dimensions available) and the resolution setting in your OS's display settings. You could have a 4K monitor, with a display resolution of 3840 x 2160 pixels, but have your OS's display resolution set to 800 x 600. This would stretch the much smaller display resolution to fit your display.
Resolution defines, in pixels, the resolution of the targeted display, while
Size defines the dimensions of the area of 3D space, that will be shown on that display. If
Resolution are different values, then the image will be stretched and/or squashed. This may be okay for 3D elements, but 2D graphics are made up of pixels, and will have lower resolution when scaled up.
It is therefore recommended that you set
Size to be the exact same value as
Resolution, or at least, the same ratio, unless you have a good reason for doing otherwise.
Angle of View determines how much of a Scene can be seen by the Camera, much like the focal length of a camera lens. Increasing the AOV will make off-camera Objects progressively appear in the periphery of the screen and will therefore increase the amount of perspective distortion. Conversely, lower AOV levels will show a smaller range of Objects, with lower perspective distortion, and are good for more orthographic views.
Clipping planes define the range that will be rendered, in relation to the position of the camera.
Near Clipping Plane determines the minimum depth that will be rendered, while
Far Clipping Plane determines the maximum depth. Anything that falls outside of this range will be ignored when rendering the frame.