I would have been fine with this being a 2MP and then it could have stayed same size!
Review-SD4A425DB-HNY 1/2.8" CMOS 4MP 25x Starlight Auto-tracking MiniPTZ
- Thread starter looney2ns
- Start date
Did anyone ever compared all the different sensor size of the lens that's typically used for security cameras? Like physically how much bigger or smaller from 2.8 to 1.8 and 1.2 etc.... I'm curious to know the actual difference in size of the sensors that make them prohibitive to put 1.8 sensor into a SD4A425DB-HNY size mini ptz.
bigredfish
Known around here
I’m pretty sure it’s more a cost thing than a size thing between 1/1.8 and 1/2.8
That and model /price differentiation
That and model /price differentiation
What does this means, specifically the limit? Like will it stop working or something?
Can this be run just on PoE only?looney2ns said:
How would one attach this to a square post (70mm wide) or a carport gutter?
Yep, after X number of "cycles" it basically becomes a fixed cam.
The camera can be ran by POE+ only.
Any number of compatible brackets would allow you to install it to a square post.
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you can also run it on 12 VDC
Very easy to mount - here's a link for installation. Dahua Technology - Leading Video Surveillance Solution Provider with CCTV Products, IP Camera, PTZ, HDCVI products, NVR, Intelligent Building, Intelligent Transportation and Software - Dahua Technology
Andy sells all sorts of mounting accessories if you need them. Here's a video I found handy on mounting to a flat surface - not the same camera but mounts the same. Hope this helps
Yeah I much rather run PoE instead of cable + power.
EDIT: yeah switch I have is for PoE+, several cameras already all PoE/PoE+ powered & still have 80w+ spare
I don't remember where the original post was. But how & why would this happen, & because software or hardware? Doesn't seem to make sense & I obviously don't get it
EDIT: yeah switch I have is for PoE+, several cameras already all PoE/PoE+ powered & still have 80w+ spare
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Just remember it is POE+ not POE.
It happens because at the end of the day these are budget PTZs. If you spend more than $10,000 then you can get an unlimited one LOL.
For most of us it isn't an issue. It is only those that run it on 5-7 second tours that it becomes an issue, and we have enough evidence on this site showing how that is a false sense of surveillance and will miss the action.
They have programmed it into the camera as they have determined that after X number of cycles, the likelihood of catastrophic failure exists. Kinda like how a timing belt for a car is scheduled to be replaced at X thousand miles, well same philosophy. You can keep running the car but the risk of failure exists.
The camera can still manual PTZ until it breaks at that point, it just won't autotrack.
tigerwillow1
Known around here
Do we know that the 2.8 sensor in the d4a425db-hny is worse in low light than the 2.8 sensor in the 2MP starlights? The 1.8 sensor in the 5542s does much better than the 2.8 sensor in the 2MP starlights, even though the pixel size is the same. Logical projection from this says the 4MP 2.8 sensor "could" be a low light equivalent of the 2.8 2MP sensor. Has there been any side-by-side comparison posted? (I could do it myself if the PTZ wasn't still sitting in its box because of no time to get to it yet).
tigerwillow1
Known around here
I can give one comparison. The 2.8 sensors use a 12 mm lens mount (barrel outside diameter), and the 1.8 sensors use a 16 mm mount. I do know the 5442 spec sheet mistakenly says 12mm. I found this out when trying to change the lens in a 5442.
Damn I did not know that I just purchased this camera thought I could just plug it into my NVR.
Depending on your NVR it may power it.
It’s a nvr5216-16p-ei honestly I have no clue how to know if it does or not. Any idea? Specs don’t mention anything about Poe+
You are screwed!
J/K
nvr5216-16p-ei should have enough power for the Mini ptz.
On the Dahua NVR5216-16P-EI Specifications page it does mention this:
Power Supply
100–240 VAC, 47-63 Hz
Power Consumption
Total output of NVR is ≤ 10W (without HDD)
Total output power of PoE is 130W, the maximum output power of a single port is 25.5W
bigredfish
Known around here
It’ll work fine
You are screwed!
J/K
nvr5216-16p-ei should have enough power for the Mini ptz.
On the Dahua NVR5216-16P-EI Specifications page it does mention this:
Power Supply
100–240 VAC, 47-63 Hz
Power Consumption
Total output of NVR is ≤ 10W (without HDD)
Total output power of PoE is 130W, the maximum output power of a single port is 25.5W
lol thank you everyone!!
Worst case you could just get a power injector and put it between the NVR and PTZ.