The Mobius "A" lens covers a horizontal FOV of 85 degrees in its default "wide" 1080P firmware setting within the video frame. (when used in the Mobius sensor module - could differ if used elsewhere) The optical AOV of the standard lens is thought to be around 110 degrees. For some reason Mobius has never publicly stated the actual focal length of their lenses but the standard "A" lens is probably in the range of 3mm - 4mm.