The cameras catching other flying objects are generally designed to help you shoot them down, not take great pictures.
They are also: (1) as light as possible; (2) as small as possible; (3) on a jet moving fast and jerking around; (4) built to survive moving fast, high Gs, etc; and (5) uncomplicated electronics to survive EMP.
Big difference between that and a doorbell.
Pardon me for being insensitive. You obviously are a true believer to buy all of what you described to justify using 30 year old camera technology in billion dollar bleeding edge military equipment.