An edge of the cover glass 705 of the lens assembly 704 forms a watertight seal with an edge of the camera opening 712. Alternatively, in some implementations, the front cover plate 708 does not have the camera opening 712, but includes a substantially transparent area 712 that is disposed on top of the lens assembly 704 to allow light e. g. , visible and infrared light to enter the lens assembly 704. In some implementations, the camera opening or transparent area 712 has a size substantially larger than that of lenses of the lens assembly 704. By these means, the camera opening or transparent area 712 of the front cover plate 708 does not become a limiting factor for a margin of a field of view of the doorbell camera 106, and the size of the lens assembly 704 determines the field of view for the doorbell camera 106. Stated another way, the margin of the field of view is limited by physical features of the lens assembly 704, rather than by the camera opening or transparent area 712 of the front cover plate 708. Such a substantially large camera opening or transparent area 712 enables a substantially wide angle view for the doorbell camera 106 when a wide angle lens assembly is applied. In some implementations, the front cover plate 708 includes a substantially opaque area that is distinct from the substantially transparent area of the camera opening 712. An interior surface of the substantially opaque area is painted with dark color ink e. g.