bigredfish
Known around here
I think that’s what I advised in my first post
Review-OEM Loryta IPC-T5442T-ZE Varifocal 4mp camera (Dahua)
- Thread starter looney2ns
- Start date
Bigredfish, I think the maximum specified distance (I guess in daylight) to identify someone you don’t know for this camera is 23 feet (corresponding to approx 60 pixels per foot). Where is that on your drive? What do you reckon that distance is at night given your settings and lighting. My guess is you could improve it by reducing the NR (35 in the video as I recall) - I don’t see any noise.
I confess, though, it’s tricky for me to decide just how good the facial image needs to be for the strong arm of the law to use it for identification. It’s all too easy to be fooled by recognition. When I blow up the facial image on my 5442s, they tend not to look as detailed as I would like. I forget his name, but I remember the guy from this forum with a bolt through his neck (frankenstein’s monster) saying, ”do you want to see what happened or do you want to see who did it?”.
I confess, though, it’s tricky for me to decide just how good the facial image needs to be for the strong arm of the law to use it for identification. It’s all too easy to be fooled by recognition. When I blow up the facial image on my 5442s, they tend not to look as detailed as I would like. I forget his name, but I remember the guy from this forum with a bolt through his neck (frankenstein’s monster) saying, ”do you want to see what happened or do you want to see who did it?”.
bigredfish
Known around here
Dahua’s DORI distance for the NI bullet 3.6mm is 23ft for ID
I’ve found on most Dahua cameras including this one that if you cut the DORI in half you’ll be much closer to reality much like their IR distances.*
*(At night with "normal" ambient light)
I’ve found on most Dahua cameras including this one that if you cut the DORI in half you’ll be much closer to reality much like their IR distances.*
*(At night with "normal" ambient light)
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bigredfish
Known around here
In perfect daylight conditions, I'd say the DORI distances are more reasonable, and you would expect Dahua or any OEM to use the most ideal conditions for their specs.
40ft from camera to street curb. I wouldn't consider any of these "perfect conditions", but more real world.
40ft from camera to street curb. I wouldn't consider any of these "perfect conditions", but more real world.
The below pic is a snapshot from a BI video. This guy hit several vehicles in my neighborhood - door checker. This picture along with the video was given to the police. They posted the picture on their Facebook page asking if anyone could ID the guy. Someone did, gave the police his name and address. He was arrested. I do not know the final outcome of the arrest.
This is not a 5442, but is the Dahua IPC-HDW5231R-ZE which was the top dog here when I bought it back in August 2018. It is a 2MP cam on a 1/2.8" sensor. The varifocal was set at 7mm. The cam is 15 feet from his face and is about 7 feet off the ground. Some of the deputies at the station did not believe this was from a security cam. They thought it was photoshopped. The deputy that I gave the video and pic to came by a few days later to ask about the cams, brand, models, etc. I was at the range at the time and she spoke to my wife. She told my wife that they had not seen such good quality shots from home cams before.
I was not happy with the video. There was some motion blur. I had to step through frame by frame to find a shot where he slightly paused his head. He was looking around as there was a pickup coming down the street. This was the best I could get.
Since then I have swapped it out for a T5442TM-AS in 6mm. I have also changed out the coach lights and over head spots to LED. There are two coach lights, one on each side of the driveway. They have two candelabra bulbs in them, each at 1000 lumens and 5000k temp. The Spots on the porch are BR40 1750 lumens and 5000k temp.
bigredfish
Known around here
Lens matters! 
The one above with the wife and the delivery guy in the red shirt are about 15ft, but with a 3.6mm lens or about 1/2 the zoom. There are times I wish i had a tighter zoom on the vehicles.
The one above with the wife and the delivery guy in the red shirt are about 15ft, but with a 3.6mm lens or about 1/2 the zoom. There are times I wish i had a tighter zoom on the vehicles.
WOW...these are amazing.....I need to look into my 5442 to get this kind of clarity. Thanks for sharing.
Do these have 2 way audio or just 1 way?
Also do they have an LED you can set to flash or turn on under certain conditions?
Also do they have an LED you can set to flash or turn on under certain conditions?
Hey @looney2ns I did read the first post in detail but am new to the space and wasn't sure. Is it safe to assume that if a speaker isn't listed anywhere on the spec sheet that it is just 1 way audio? That is my default assumption but I don't know what I don't know.
Some of your other reviews have interface specs like:
> 1/1 Alarm in/out, 1/1 audio in/out (Built-in MIC, Built-in Speaker)
But this one didn't have a similar line, just specs on the 1 way audio.
Same deal with the LED...I'm assuming the absence of it anywhere in the spec sheet means it doesn't have them.
Thanks for all the great reviews they're really helping me get a plan together for my first BI setup!
Some of your other reviews have interface specs like:
> 1/1 Alarm in/out, 1/1 audio in/out (Built-in MIC, Built-in Speaker)
But this one didn't have a similar line, just specs on the 1 way audio.
Same deal with the LED...I'm assuming the absence of it anywhere in the spec sheet means it doesn't have them.
Thanks for all the great reviews they're really helping me get a plan together for my first BI setup!
DAHUA put white seal ring on the camera, i ask them to replace with black one, now looks better. Here is the pic under Rendering. It's sexy
CCTVCam
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- Sep 25, 2017
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Like the logo font Andy. Looks classy. Would be great if they could black Japan those case screws as well.
Yes, black screws maybe next order.
I think most (including me) will look for guidance from this forum rather than stumping up a $200 annual subscription, even if it means you will forfeit your refer-a-friend payback. Sorry looney2ns, I hope you don’t black list me!
CCTVCam
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- Sep 25, 2017
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Confused by this. The calcualtor is FREE to use. You don't even need to sign up. Simply follow the link, cllck change location and enter your postcode in the search box. When Google Maps comes up, drag the map until your home is where you want it. Add a camera or if one is showing adjust the imager size / model parameters to match your proposed purchase, then rotate it by dragging the little man at the end of the projected FOV until the camera points how you want it to. In the boxes to the right of the screen you can adjust for height, focal length, viewing distance etc and play around until you find the best solution. The simply read off the final focal length from the window (obviously if chosing a fixed focal length cam, you need to experiment with the fixed focal lengths available and choose the one that gives the required fov for your location.
Looks great Andy!DAHUA put white seal ring on the camera, i ask them to replace with black one, now looks better. Here is the pic under Rendering. It's sexy
View attachment 72953
Hi CCTVCam and looney2ns - this IPVM tool is fabulous!!! When I tried to use it previously I obviously clicked on member only features and gave up but your brief driving lesson CCTVCam hit the spot. Hope it lets me play with it for free ad infinitum. What a great forum this is!