I have wired up million dollar state of the art government and private camera's. Even the $20,000 dollar camera's with multiple remote IR illumination give a garbage picture at night compared to during the day. Most of the high security places go thermal imaging for overall monitoring, with only the closer camera's at point of entry being normal camera's, and those ones they almost all have enough light to avoid using night vision.
The linked system with the 1080p cameras can see great at night. I can make out even small details from far away, but not colors, which makes things like license plates very hard to read, and while I can get the shape of a persons face really well, without color it makes it much much harder to identify who it is.
I like the POE (power over ethernet) you can get 1000' reliably, but I would go shielded going that far. Normally at the 1000' mark you would need to boost it, but going to a gate house that may not be possible.
I have ran up to 2500', but that was with shielded teck cable and not your normal cat6e cable, and not your standard switch either.
But you could just put a fiber switch at both ends and have no issues since you will have power out there.
It is night time, you will NEVER be able to view it like a daytime camera, there just isn't enough light. I don't care if you buy the baddest Avigilon or other high end camera and illuminators everywhere, you just won't see the color as you would during the daytime.
Like you said cameras closer to the building in a lighted area will be able to identify someone much better than a camera that is pretty close to black and white in the dark,.....It's all about the design of the system.
I too have installed many different systems for many government agencies.
The thermal imaging is used in select areas and costs a lot!
I guess you don't certify the cables you run?
The contracts we do require certification, Cat6 no longer than 328 feet. Do you know what the voltage drop is on a 23ga wire over 1k feet, of course this depends on the switch you are using? But, at 1000 feet over 23ga wire it has to be pretty high.
Not bashing what you are doing but it sounds like you are flirting with danger there....
When you are looking to read license plates you use a different camera that is made to view license plates placed in a strategical location.
To the other guy, I would suggest using fiber modems.
