A doorbell looks at a person and at the sky at the same time. That is the garage-exit problem in a porch. If the module clips the sky, you lose the street. If it saves the sky, the visitor is a silhouette. HDR, an IR-cut that can move or a dual filter, and a wide lens that still matches the pixel CRA are the work. A 5 MP sticker is not.
What to lock before you pick a sensor
- Day and night: IR-cut behaviour and whether 850 or 940 nm lamps sit in the housing.
- FOV: usually wide, which fights small modern pixels on CRA. Test the corners.
- Weather and UV on the front glass. Coatings and a sealed holder are part of the lens.
- Host: most doorbell SoCs want MIPI. A USB doorbell is a different architecture.
Read night vision modules next to this. Then pick from MIPI camera modules if the SoC is in the product, or USB camera modules only if the hub really is UVC. We do not pretend a consumer doorbell firmware is a Camemake SKU. We do build the module that sits behind the glass.