Worlds First Review - Dahua DH-IPC-HDW5849H-ASE-LED / IPC-Color4K-T - 2.8mm Turret

wittaj

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@samplenhold yeah lol I am torn between the mini PTZ and another 4K-T myself LOL. I am leaning towards the 4K-T as I don't have the light for the mini PTZ MP/sensor combo. Or maybe both like you LOL.
 

samplenhold

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@samplenhold yeah lol I am torn between the mini PTZ and another 4K-T myself LOL. I am leaning towards the 4K-T as I don't have the light for the mini PTZ MP/sensor combo. Or maybe both like you LOL.
I am dead serious about maybe two in those windows. I had never thought about putting a 4K-T up there until your post. You know I have light there. See the still from tonight for the SD12203T-GN.

(I need to trim that oak tree over the driveway soon)

Driveway Window 2022-11-04 08.27.05.160 PM.jpg

The spec sheet that Andy posted for the Mini-PTZ said the lens is a 5-125mm. I could count the fleas on the kid down the road with that puppy!
 

IAmWatchingYou!

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So now I have the Dahua 4K-T 2.8mm on top and the competing Hikvision DS-2CD2387G2-LSU/SL 2.8mm right underneath it mounted about 7 1/2' high out front. This is definitely producing a lot of looks for people walking by, especially with a gigantic ladder out front with various object placed on different rungs.
@samplenhold Totally agree with Rule #1 now!

There is all sorts of quirks with and variations between these two cameras. I've spent the last couple of hours fighting with the image adjustment controls to get as close to a similar image as possible. I've been testing at night here with street lights, I manually set the shutter to 1/30 on both cameras. For both cameras, the WDR washes out colors. For both cameras, HLC produces the best image for me with both bright areas and dark areas, but I had to turn down the exposure compensation on the Dahua. Without HLC, the text on the box would be super overexposed, or after adjusting image settings the background very underexposed.. Overall I was able to produce a noticeably better night image on the Hikvision.

I also compared the microphone as I was having trouble with all the digital noise in the Dahua 4K-T. The Hikvision actually has some very noticeable background static, but nothing like the noise I was hearing from the Dahua. The microphone is definitely better in the Hikvision, and the Hikvision also adds a built in speaker. They're both not what I would call high quality audio though by any means.

Regarding the focus, I put a box with various sizes and colors of text on it out about 7' high on a ladder. Although the Hikvision DS-2CD2387G2-LSU/SL specs show a 4m to infinity depth of field, the Hikvision's close focus is quite noticeably better than the Dahua 4K-T's.

What's weird is that it seems even with the shutter on both cameras set at 1/30, it looks like the Dahua is doing noticeably better with cars driving by.
Edit: I now realize that shutter speed is the "slowest to allow", so the Dauha might have been using a faster shutter. I had the Dahua's shutter set to "Shutter Prioirty".

Anyhow, I think the right thing to do here would be to start a new thread for a comparison of the Dahua Color 4K-T and Hikvision DS-2CD2387G2. To be continued...
 
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wittaj

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So now I have the Dahua 4K-T 2.8mm on top and the competing Hikvision DS-2CD2387G2-LSU/SL 2.8mm right underneath it mounted about 7 1/2' high out front. This is definitely producing a lot of looks for people walking by, especially with a gigantic ladder out front with various object placed on different rungs.
@samplenhold Totally agree with Rule #1 now!

There is all sorts of quirks with and variations between these two cameras. I've spent the last couple of hours fighting with the image adjustment controls to get as close to a similar image as possible. I've been testing at night here with street lights, I manually set the shutter to 1/30 on both cameras. For both cameras, the WDR washes out colors. For both cameras, HLC produces the best image for me with both bright areas and dark areas, but I had to turn down the exposure compensation on the Dahua. Without HLC, the text on the box would be super overexposed, or after adjusting image settings the background very underexposed.. Overall I was able to produce a noticeably better night image on the Hikvision.

I also compared the microphone as I was having trouble with all the digital noise in the Dahua 4K-T. The Hikvision actually has some very noticeable background static, but nothing like the noise I was hearing from the Dahua. The microphone is definitely better in the Hikvision, and the Hikvision also adds a built in speaker. They're both not what I would call high quality audio though by any means.

Regarding the focus, I put a box with various sizes and colors of text on it out about 7' high on a ladder. Although the Hikvision DS-2CD2387G2-LSU/SL specs show a 4m to infinity depth of field, the Hikvision's close focus is quite noticeably better than the Dahua 4K-T's.

Anyhow, I think the right thing to do here would be to start a new thread for a comparison of the Dahua Color 4K-T and Hikvision DS-2CD2387G2. To be continued...

1/30 shutter on a static image is useless.

You really need to be running faster shutters, especially with these bad boys. 1/60 at a minimum to minimize blur with a person walking, but preferably faster. What about gain and the other parameter (brightness, contrast, etc.) are those at default? You should be able to run 1/120 easy - I can and I do not have street lights nor neighbors that turn their outside lights on.

Using backlight at night can introduce blur, so make sure any of your comparison testing includes motion as that is when you can see the limitations of backlight at night - only use it after exhausting every other setting.

Also be cognizant of the field of view and try not to do too much. There is a post here of someone trying to do way too much with the field of view with the Hik and ended up having a mess everywhere near and far and was useless video. Running backlight to get a brighter image far away that blurs any motion is useless. Sometimes the background not being clear being 50 plus feet away is OK given the ideal focus range of the 2.8mm.

Be sure to do your testing with motion - that is all we care about here.
 
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DanDenver

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I think you have some valid points about the differences.
However motion videos at night are what concern me. How well do they catch motion when a perp is most likely to make a move.
 

IAmWatchingYou!

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@wittaj I just set both cameras to 1/60 and am going to run them over night with human/vehicle enabled. I spent quite some time trying to get close objects not to be overexposed yet objects further out to be visible, but HLC definitely made a massive difference. I'll have to try disabling it to see if it has any effect on the Hik's blur. A box on the ladder was literally appearing as a white glowing blur before enabling it. You're right about field of view - I probably don't care about my neighbor's backyard 70' away, but I do care about 5-50' out. Currently the street light bulb is out which is creating a bit of a problem beyond about 20'.
There's so many things to consider here:
Yep - motion blur is huge for capturing moving vehicles and running perpetrators. I definitely understand now the importance of color too - seeing what color a car is and what color a person's clothes are is huge too, and it's worth sacrificing some depth of field for that in certain circumstances.
For my needs, I think #1 for me is the AI detection and be able to tell that a person or vehicle is on my property, and to get push notifications. Even if the person is a blur, this could very well prevent something from happening in the first place if I combine that with 2-way audio for warn away after seeing the video where the 2 guys are creeping around people's car's.

One other thing I have to add is that I found that Hikvision isn't using Google's Firebase Cloud Messaging for push notifications on Android. Hikvision is actually using their own proprietary push notification service. This causes battery life issues as there's always a network connection open from your device to their servers in addition to Google's, in addition to having to worry about devices doing battery optimization and dropping the network connection the app makes.
 
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EMPIRETECANDY

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Today made some compare for the IPC-Color4K-T with Hikvision 4K DS-2CD2087G2-LU. Has some compare here, both cams all in default and 1/1.2cmos

1. hikvision is aggressive colorful, the shelf blue are not the real color(esp when all light is on), even the wall become a silver. And the door is more a brown white color , it shows a little green, from our compare, 4KT pics can be more to the real color. But some guys may love the vivid pics If they just watch from the pics.
2. Low light wihtout any illumninator, the Color4K-T is bit better than hikvision one.
3. Build in LED light on, From our team's watching , dahua do better too.

View attachment 144088

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Door becomes a little green. Shelf blue become very deep blue.
View attachment 144093


REAL light situation, with all lights off by iphone12, So you will see both cams are good for full color even no external light.

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I have some compare here for hikvision color4k and our 4K-T. I have confident ours 4KT/4K-X can do bit better than those colorvu camera. Sure the colorvu cameras also are very good.
 

ArnonZ

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For reference, my testing are through managed POE switches
hi @Wildcat_1
A bit off topic, but do you find the managed POE switch better for your needs?
Do you use it to ease the traffic of the cams on your LAN? security?

I was thinking about BI computer with two NICs that would be the gateway from the LAN to the cams. does that make any sense? is that how you're using it?
 

BadKarma

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I just got my second camera from Andy, and I want to say thank you for the quick delivery. I chose the 4k-t 2.8mm in black, and I must say it looks fantastic. I also managed to get my hands on two NC800 cameras that were accidentally listed on Amazon for £99, so I had to buy them too lol.

It occurred to me that the firmware on the NC800 is identical to that on the DS-2CD2387G2-L(U), making it simple to upgrade to the most recent Hikvision firmware.

When comparing the nc800 and 4k-t, I discovered that the results were very similar to what I saw in wildcats Comparison video between the 4k-t & DS-2CD2387G2, for me the 4k-t is a better camera with its manual shutter and gain settings and for my needs at capturing number plates at night with a faster shutter speed it was able to give a good overview is well where as the nc800 would struggle at that shutter speed making it too dark to use.
 

wittaj

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I just got my second camera from Andy, and I want to say thank you for the quick delivery. I chose the 4k-t 2.8mm in black, and I must say it looks fantastic. I also managed to get my hands on two NC800 cameras that were accidentally listed on Amazon for £99, so I had to buy them too lol.

It occurred to me that the firmware on the NC800 is identical to that on the DS-2CD2387G2-L(U), making it simple to upgrade to the most recent Hikvision firmware.

When comparing the nc800 and 4k-t, I discovered that the results were very similar to what I saw in wildcats Comparison video between the 4k-t & DS-2CD2387G2, for me the 4k-t is a better camera with its manual shutter and gain settings and for my needs at capturing number plates at night with a faster shutter speed it was able to give a good overview is well where as the nc800 would struggle at that shutter speed making it too dark to use.
Now make sure to modify that 1 star review on Ali :cool:
 

frankheon

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So after going through 32 pages......where can I find the latest firmware? Is 3.0.0.17R from Aug 26 the latest?
 

Wildcat_1

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The noise that was in the audio captures I posted was with the camera connected to a new PoE+ switch. Surprisingly with the power supplies the noise was about half as loud.
Interesting because I find the POE+ connects reduce any interference
hi @Wildcat_1
A bit off topic, but do you find the managed POE switch better for your needs?
Do you use it to ease the traffic of the cams on your LAN? security?

I was thinking about BI computer with two NICs that would be the gateway from the LAN to the cams. does that make any sense? is that how you're using it?
Yes I absolutely advocate for managed switches. To be fair I use those in deployments anyway but even personally I have a complex NW infrastructure. I use for segmentation and security across different traffic profiles and in the case of cams, yes, isolate and then control bandwidth as well. Also the logging functionality is incredibly useful too
 

Parley

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For the Issue pixel & chip processing issue of the 4K-T , we have another newer firmware to be released very soon, has some good improvement based on the 20220923 version for the pics.
Right now can do the testing, anyone want to try just send me DM.
At least these issues are firmware related instead of hardware.
 
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