Mine has been awesome. The image quality and mega zoom never ceases to amaze me.
Review-SD4A425DB-HNY 1/2.8" CMOS 4MP 25x Starlight Auto-tracking MiniPTZ
- Thread starter looney2ns
- Start date
flynreelow
Known around here
- Dec 12, 2016
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I own one of these. But be warned, it is pretty loud when PTZ functions are working. There is an alternative model, that is much quieter, and uses undetectable (to the human eye) IR.
empiretech01.com
And, your are right, no real activity from Dahua on cameras in this category. I really can't see a reason why Dahua hasn't made available this size/type of PTZ with a 1/1.8 sensor. That would be a killer camera.
EmpireTech PTZ425DB-AT-R 4MP 1/2.8" CMOS 25x Starlight Invisible IR Sm
1/2.8” 4Megapixel STARVIS™ CMOS 25x optical zoom Starlight technology Max. 25/30 fps@4MP Invisible IR distance up to 50m Auto-tracking 1.0 Low-noise motor Perimeter protection Face detection SMD 3.0 IP66
empiretech01.com
And, your are right, no real activity from Dahua on cameras in this category. I really can't see a reason why Dahua hasn't made available this size/type of PTZ with a 1/1.8 sensor. That would be a killer camera.
Mine is outside, it can make all the noise it wants. Anybody close enough to hear it is getting their picture taken and I doubt they'll complain. Seriously, I've never heard a thing coming from mine.
Sorry, I don't have any audio of how loud it is. I'm sure YouTube has at least 1 video, that will give you an example.
It isn't. But like everything, it is relative.
Do a search in this thread on "noise" and you will see what others have said about it.
It sounds a bit like R2D2 and in the middle of the night with no other sound, someone may slightly hear it.
But middle of the day I don't hear it.
The 'quieter' camera uses different wavelength IR at night. So no red LED's are visible by a human on this camera. The downside is, if you use supplemental IR or have cameras in the same area, their IR won't be seen by the 'quieter' camera.
What wavelength is the SD4A425DB-HNY-R? It looks like it just has a dark tint applied to it to make it "invisible" so I'm curious if it really is a different wavelength at all?
I like it but ai auto tracking could be better but it’s a great size and style for keeping it private looking
It says 'invisible' for IR on the camera specs. That would be 940nm versus 850nm normally used on almost all security/surveillance cameras. So it truely does have more than just a smoked cover as to detect 940nm IR you would need a different filter also.
I think "invisible IR' is a marketing term not a technical one.
if it truly was 940nm it would say so in the specs I would think
if it truly was 940nm it would say so in the specs I would think
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You could be right, on this. But the specs for both cameras show an IR distance of 100m vs 50m for the invisible. According to AI that's about the max distance for 940nm IR. Who the fuck knows for sure. Even the official spec sheet from Dahua only says invisible for IR, with a max distance of 50m. We all know how accurate a Dahua spec sheet can be.