Keep in mind that DORI is under ideal, perfect scenarios with no motion and night is with the shutter slowed way down.
Real word DORI will be nowhere near those numbers.
With movement, we have seen you probably have to cut the numbers in at least half, and then at night cut that daytime reduction number at least in half.
Here are my general distance and camera recommendations to IDENTIFY based on focal length, but switch out the Dahua 5442 series camera to the equivalent 2MP on the 1/2.8" sensor or equivalent Hikvision works as well. These particular cameras are generally accepted by many here as the best balance of performance, price, and features. With all the cameras I have used and tested over the years, these are the ones I also currently use.
- 5442 fixed lens 2.8mm or the 4K/X bullet or 4K/X turret - anything within 10-15 feet of camera OR as an overview camera. The turret versions have a mic and the 4K/X bullet has two-way audio.
- T5449H-ASE-D2 2.8mm fixed lens - anything within 10 feet of camera where the object would be in a backlit condition at night. This camera has two-way audio.
- 5441F-AS-E2 (AKA Boobie cam) or E3241F-AS-M- great choice for a front door camera. The boobie cam can have one lens pointed down for packages. This camera has a mic.
- T5241H-AS-PV - Great little active deterrence camera with two way talk. Good for anything within 10 feet of camera or as an overview camera.
- 5442 ZE or 5842-ZE- varifocal up to 13mm- distances up to 40-50 feet (personally I wouldn't go past the 30 foot range but I like things closer). This camera has a mic.
- 5442 Z4E - varifocal up to 32mm - anything up to 80-100 feet (personally I wouldn't go past 60 feet but I like things closer).
- 5241-Z12E - varifocal up to 64mm - anything from 80 feet to almost 200 feet (personally I wouldn't go past 150 feet because I like things closer).
- 5241-Z12E - for a license plate cam that you would angle up the street to get plates up to about 175 feet away, or up to 220 with additional IR.
- 49225 PTZ - great auto-track PTZ and in conjunction with an NVR or Blue Iris and the cameras above that you can use as spotter cams to point the PTZ to the correct location to compliment the fixed cams.
- Indoors, the IP2M-841 is a cheap common camera choice. Works with Dahua NVR and Blue Iris. Has wifi and ability to use POE with this adapter. Has two-way talk and basic autotracking.
At the urging of several folks here, I created a thread to show the importance of focal length and how focal length can be more important than megapixels (MP). I mentioned some of this in the post regarding The Hookup’s latest video demonstrating different cameras, including one sold from a...
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