So how can you be sure you're choosing a Starlight model? The Dahua webpage for the above model doesn't use the word Starlight. At least I don't see it.If there where, you would see us talking about them.
Here is a newer version, thats just a tick better.
Dahua Starlight IPC-HDW5231R-ZE 800 meter capable ePOE
If you care about ID'ing someone after dark, forget the higher megapixels, unless you want to install lots of light.