Worlds First Review - Dahua - IPC-Color4K-X / DH-IPC-HFW5849T1-ASE-LED - Full Color 4K Camera

ljw2k

Known around here
Joined
Jun 9, 2014
Messages
1,486
Reaction score
2,260
Location
United Kingdom
This has already been mentioned quite a few times here with various members. Dahua should not be sending camera's out like this. Very Poor Quality Control.
Return to your seller and ask for pre paid labels as the goods are not fit for purpose so can't see why you should pay for a return.
 
Last edited:

bigredfish

Known around here
Joined
Sep 5, 2016
Messages
17,014
Reaction score
47,469
Location
Floriduh
Hi guys, I need some help with my cameras I got two 3.6mm and both are out of focus within approximately 8 ft from the camera. Can the lens be adjusted in these cameras? and if so how? Thank you!

can you show an example pic?
 

wittaj

IPCT Contributor
Joined
Apr 28, 2019
Messages
24,430
Reaction score
47,552
Location
USA
Hi guys, I need some help with my cameras I got two 3.6mm and both are out of focus within approximately 8 ft from the camera. Can the lens be adjusted in these cameras? and if so how? Thank you!
Yes the lens can be adjusted. It is a matter of taking off the black front cover, xacto knife scraping off the glue on the thread and turn.

It may or may not be a factory defect and it affects more brands than just Dahua. Some fields of view just lend itself to out of focus if the objects are too far or too close than what the camera was designed for. Even though they may have "infinity" focus, there is a sweet spot distance they are designed for and if the main action in your field of view is not within that sweet spot area, it can look blurry.
 

misio9

n3wb
Joined
May 7, 2021
Messages
7
Reaction score
11
Yes the lens can be adjusted. It is a matter of taking off the black front cover, xacto knife scraping off the glue on the thread and turn.

It may or may not be a factory defect and it affects more brands than just Dahua. Some fields of view just lend itself to out of focus if the objects are too far or too close than what the camera was designed for. Even though they may have "infinity" focus, there is a sweet spot distance they are designed for and if the main action in your field of view is not within that sweet spot area, it can look blurry.
Thank you for the reply, I’am positive this is the camera issue as some videos in this thread are very similar to my camera installation and non of those look out of focus like mine does. Will give it a try tomorrow and will post back. Thank you.
 

NightLife

Getting comfortable
Joined
Sep 10, 2021
Messages
490
Reaction score
1,096
Location
Canada
I just assumed that things closer than the 'close focus' distance might be slightly out of focus, just like a phone, but on a much larger scale. The close focus on the 3.6mm camera is close to 18 feet and can be seen below in the specs sheet:

***Note: If close focus has another meaning, then I'm interested to know, since I am about as new to this as one could be. I suspect it likely may, but maybe I'll get lucky :lol:

Screen Shot 2021-09-19 at 23.05.40.png
 

Wildcat_1

Known around here
Joined
Dec 9, 2018
Messages
2,046
Reaction score
5,861
Location
US
Thank you for the reply, I’am positive this is the camera issue as some videos in this thread are very similar to my camera installation and non of those look out of focus like mine does. Will give it a try tomorrow and will post back. Thank you.
Let us know what you're seeing, share a pic and we can weigh in. Also if you want me to take a look, DM me and can jump on directly. Working through some dial in requests but getting to all :) As mentioned before, YES you can remove the case and manual focus the lens on this, its not difficult, just a little fiddly BUT as I stated before is not something that end users should have to do on brand new deployed cams from any manufacturer. Also let me know which FW you are running on this one too. Thanks
 

misio9

n3wb
Joined
May 7, 2021
Messages
7
Reaction score
11
Let us know what you're seeing, share a pic and we can weigh in. Also if you want me to take a look, DM me and can jump on directly. Working through some dial in requests but getting to all :) As mentioned before, YES you can remove the case and manual focus the lens on this, its not difficult, just a little fiddly BUT as I stated before is not something that end users should have to do on brand new deployed cams from any manufacturer. Also let me know which FW you are running on this one too. Thanks
Nice to hear that, I was unable to take a pictures today but will try tomorrow after work. I took one camera apart but cant figure out how to adjust the lens it seems like there is two tiny screws on each side of the lens and some glue but it really doesn‘t look like there is a thread more like it just slides in and out.
 

Attachments

NightLife

Getting comfortable
Joined
Sep 10, 2021
Messages
490
Reaction score
1,096
Location
Canada
In the interim, can anyone expand on 'smart Object detection'? I'm not sure how we would implement that. Does that mean we can use historic footage to define some object etc so it can trigger the camera the next time it sees it?
 

EMPIRETECANDY

IPCT Vendor
Joined
Nov 8, 2016
Messages
8,259
Reaction score
23,718
Location
HONGKONG
As an Amazon Associate IPCamTalk earns from qualifying purchases.

JesseSR

Getting the hang of it
Joined
Aug 21, 2021
Messages
134
Reaction score
83
Location
USA
@EMPIRETECANDY Any idea when you will get more 2.7mm versions of this 4K in STOCK? They all seem out at the moment at Amazon and AliExpress both.
 
As an Amazon Associate IPCamTalk earns from qualifying purchases.

NightLife

Getting comfortable
Joined
Sep 10, 2021
Messages
490
Reaction score
1,096
Location
Canada

Andy, how would you compare and contrast the new Full Colour 2.0 Dual Lens to the color4K-X? I have the 2.8mm Color4K-X on order as you know, and will start with that camera, but would also like to know if the 2.0 will be my next camera or not.


Is the 2.0 Dual Lens so improved that it makes the color4K-X seem antiquated already?
 
As an Amazon Associate IPCamTalk earns from qualifying purchases.

user8963

Known around here
Joined
Nov 26, 2018
Messages
1,465
Reaction score
2,315
Location
Christmas Island
Andy, how would you compare and contrast the new Full Colour 2.0 Dual Lens to the color4K-X? I have the 2.8mm Color4K-X on order as you know, and will start with that camera, but would also like to know if the 2.0 will be my next camera or not.


Is the 2.0 Dual Lens so improved that it makes the color4K-X seem antiquated already?
wildcat will publish his review (hopefully soon)... andy sent him a sample.. so we are all waiting :D
 

Wildcat_1

Known around here
Joined
Dec 9, 2018
Messages
2,046
Reaction score
5,861
Location
US
All

As promised, I tested the new version (08/28) of this FW on the Color4K-X. I want to be clear that this 08/28 FW is NOT BUILT ON THE KNOWN GOOD 6/11 codebase that I flagged to Dahua as the 08/28 was already being produced to re-test Smart Object Detection. Therefore I DO NOT RECOMMEND you use 08/28 on the Color 4K/X. Stick with 6/11 while I test the latest version (09/08) that is built on 6/11 and has some bug fixes for items I filed.

For this post I just wanted to focus on Smart Object Detection. It’s back and it DOES work BUT it needs a lot of work still to make this useful. First let me layout the requirements to use this:

  • Must have SMD turned off
  • Cannot use with any other Smart Plan therefore you give up IVS to use this
  • Only captures snapshots NOT video
  • WHen using Smart Object Detection your only option for capturing video is vanilla Motion Detection

As you can see this does limit the application quite a fair amount so you must want to be alerted to packages being abandoned or missing to have a need for this feature. So what does it actually do and what do you get ?

When set to detect Abandoned Objects, the cam algorithm scans the FOV, when an item is added to the scene and the threshold (6s or longer) is breached, an image is captured and an audio alarm, notification etc can be sent. If you set for Missing Objects then the camera will again monitor the scene (before and after scan if you will), detect the object that’s missing and then alert.

Sounds good right ? In theory it is but in current application its not that useful in my testing. The problem is that although the camera algorithm is clearly doing a before and after comparison AND is smart enough to actually show a target box around the missing item (i.e. when the package has already been taken shows a target box in Live view around the area of the missing item) its the end results that at the moment don’t add much value.

For example, on the Abandoned Object image cap you see the whole image, no target box, nothing to highlight what was abandoned and now tagged metadata as part of the stram. Now, granted if you have an empty loading dock or porch then this is very easy to see what was left or abandoned BUT if you have an area that already has a number of items in the FOV it can be tough to tell which one was abandoned. On the Missing Object its unfortunately worse. Assuming you have your empty loading dock, porch etc for this example, the capture image literally shows an empty FOV, again no target box showing even the area the cam detected the missing item AND CRITICALLY no before and after capture.

So in summary, does this feature have promise, could it be useful at some point, YES, BUT it needs a LOT of work. The algorithm being used is good but the implementation of the resulting capture and alerts is not where it needs to be in my opinion.

Here is what I will be asking Dahua to work on with this feature:

  1. Ability to have Smart Object Detection as an item under other IVS options (trip / intrusion etc) OR worst case allow Smart Object Detection (as its only images, not video) to be turned on at the same time (parallel processing) as IVS. In this FW (08/28) release Dahua removed Abandoned & Missing Object from the IVS rules, which is great due to the added functionality of alarms etc that you can setup BUT it limits your ability to use your cam for other critical video based captures UNLESS you set a schedule for Smart Object to run from x to x and IVS to run from y to y etc
  2. IF Smart Object Detection MUST remain as its own Smart Plan item then allow it to capture video not just snapshot images
  3. If Smart Object Detection remains as image capture only, then:
    • a) must have at least 2 captured images per alert, 1 that shows the before Abandoned or Missing Object and the other capture that shows after
    • b) highlight / meta tag the target box / item so its easy to see on screen what was Abandoned or what is Missing. Include in stream tagging
  4. Fix a critical Bug that disables Smart Object Detection. There is an option for Independent Object Alarm BUT in my testing once you’ve checked this and even if you uncheck it then auses the Smart Object Detection to STOP DETECTING any objects.

I will also be updating @EMPIRETECANDY on my findings and working with Dahua engineers to get their feedback on how they might proceed and fix. As I said, at the moment still needs a lot of work, I don't think its worth using and TBH think there are other areas of focus (such as bugs etc) that are probably more worthwhile working on for Dahua in my opinion.

HTH
 
Top