Hikvision colorvu vs darkfighter series#
The ultra series DS-2CD5A46G0 with it's 1/1.8 sensor is only marginally better at 0.025 (though otherwise it is far superior).
The 2346G2 is specified at 0.03 so producing twice the resolution at roughly half the light. From memory (without referring to spec sheets) the 2 MP Darkfighter turrets I used to favour (DS-2CD2325FWD-I) had a minimum lux specified at 0.05. I'm basing that choice on the cameras specified low light capabilities and the AcuSense technology. I think I posted a few pics on here a couple of weeks ago if you look through my posts. They have a built in LED white light but will provide good colour images with it disabled if you have some lighting (the LED is a bit like a spotlight and not the "warm supplemental light" that Hikvision describe. The 4MP ColorVu (DS-2CD2347G1) models are very good as well if you have "some" light - streetlight, dawn to dusk lights around your property. My advice would be to wait a short while as the new 4 megapixel G2 Acusense models with built in microphone should be available later in June (DS-2CD2346G2-IU). The G2 Acusense are far better than the G1 models - the G1 models can't have motion detection enabled as well as line crossing, intrusion detection whereas the G2 can (I believe they have an additional chip). For every stop of shutter speed you increase, you're halving the light that gets to the sensor each time. This will give you a great image in colour during the day or monochrome with infra red on a night of anything static, but in order to get a decent image of anyone in motion you're going to need to speed that up somewhat, which will require more light to produce an acceptable image. Although you can get "powered by Darkfighter" models that are marketed to work in low light, the reality is that to do so the camera is using a slow 1/25 second shutter speed. Unless you have great lighting they're likely to disappoint when it matters. My first bit of advice would be to avoid the 4K cameras.
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