Dahua Dual Imager Dome Camera Tested (HDBW4231FN-E2-M)

By: Rob Kilpatrick, Published on Nov 07, 2018

Dahua has introduced a dual-imager dome model, the HDBW4231FN-E2-M, with two independently positionable sensors including integrated IR, not found on competitive dual-imager cameras.

To see how this new model performs in real world scenes, we bought and tested the dual dome against Dahua's own single imager models, examining:

  • Camera positioning flexibility
  • Full light imaging performance
  • Low light color performance
  • <1 lux dark performance
  • Bandwidth comparison
  • VMS integration
  • Pricing compared to others

***** *** ********** * dual-imager **** *****, *** HDBW4231FN-E2-M, **** *** ************* positionable ******* ********* ********** IR, *** ***** ** competitive ****-****** *******.

** *** *** **** new ***** ******** ** real ***** ******, ** bought *** ****** *** dual **** ******* *****'* own ****** ****** ******, examining:

  • ****** *********** ***********
  • **** ***** ******* ***********
  • *** ***** ***** ***********
  • ********* **********
  • *** ***********
  • ******* ******** ** ******

[***************]

*******

** *** *****, *** Dahua **********-**-* **** ****** dome *** ******* *** positives:

  • **** ***********:*** ******'* **** ******* were **** ** ******** due ** ***** **** floating "*******" ******, **** support *** ******** **** to ****** ***** *** shaped *****.
  • ******** *** *****/**:*** ***** *********** *** superior ** **** **** imager ****** ** **** tested *** ** ********** IR, *** ***** ** competitors **** ** ****** or *******.
  • ***** *** ***********:*** ****** **** **** one ******* *** **** imagers ** ********, *****, Genetec, *********, *** ** Witness, ********** *** *.*** to *** ***** ******, and *.*** ** *******, Milestone, *** ** *******.

*******, ** ******** **** three *** *********, ** well:

  • **** ** ********: *** ******* ********** ** brightly *********** *** ****** of *** *****, **** objects ** *** ***** poorly ***********.
  • **** *** ***********: *** *********** *** **** against ******** ****** **** light, **** *** ********** and ******* ******** ********** washed ***.
  • *** ***** ************:*******, ** *** ***** color **** ******* ******* were ******, *** ******* objects **** ** *** test ***** **** *********** at **** ***** *** far ***** ** *** tests. **** ** **** rare/niche **** **********/** ************ but ***** ************ ******* for ***** ** ***** should ******.

***************

*** ****** **********, *** Dahua **** **** ****** dome ** * ***** choice *** ***** ******* to ***** *** ****** or ****** ***** ***** may ******* ******** ****** imager ******, *** ** its **** ***********, ********** IR, *** ***** *** support, ** * ***** competitive ** *** *** cost ** *****, *** requiring **** *** ***** and *** *******.

*******

*** ***** **-***-**********-**-* ******* ****** for ~$*** ***. **** is ************* ***** **** competitive **** ****** ***** such ** *** *********-******(~$*** ******) *** ******* MicroDome *** (~$*** ******).

**** ******* ** ******* to *** ******* ** domes (********* ~$*** ****), though ******* *** *** licensing ** ******* **** using *** **** ****** camera.

Competitive *******

**** ****** ****** ******* are ***** ********** ****.*******'* ********* ***,******'* ***-******, *******'**** *********** *********. ******* *** Mobotix ******* ******* ******* not ********* ** ***** and ******, **** ** higher *********** (* *** 6 **), ** *********** audio, *** */*. *******, Dahua *** ****** ****** are **** ****** ********* and **** ******** **** brands.

Physical ********

*** ***** **********-**-* ** ******* in **** ** ****** imager *****, **** **** 5" ** ********, **** the **** ********** ***** its *** ***** ***** instead ** *** ****** one. **** *** ** seen ** *** ********** to * ******* ***** single ****** **** *** turret *****:

similar size to single imager domes

**** ****** ** ************** on * **** ***** an "*******" ***** ******. Camera ****** *** *****, with ** ********* ******* and ** ***** ******* aside **** *.*** (***° AOV) ** ***** *******. A ******** **°/*.*** ****** is ********* ** ***** regions.

***** ** ****** *** camera's ******** ********.

Open ****** *******

** ****** *** ****** in ** **** ****** area ~**' ****, **** both ******* ******* ******** of **** *****, **** the ****** ****** **** of ****** ** *** open ****** ****, ******* the *** **** *****.

**** ************* ******* **** sides ** *** **** office ****, **** **** exposure **********. *******, ***** is * ******* ***** spot ******** ***** *** camera (** *** ****** of *** ***** ****), which ***** *** **** to ***** **** * separate ****** ** *******.

Entry ****/******* *******

****, ** ****** *** camera ******** ** ***** vestibule ** **** ** a ********* *******, **** one ****** *** ** in ******** **** ****** fit *** *******. ** this *****, ******** *** even, **** *** ******* fully *******, ********* *** area ******** ***** *** camera. *** ****** ***** toward *** **** **** tightly ******* *** ***** and ***** **** ****.

Image ******* **********

******** ** * ******** 1080p ***** ****, *** dual ****** **** ******** similar ******/***** ******* ** near *****, **** **** slight ************ ** *** subjects **** ** ~* klux.

day performance comparison 10

** ***** ** ***/~**', performance *** ***** *******, but ****** ******* ************* reduced ** **** *******, with **** ***** ******* visible. ****** **** *****, detection ** ****** ********, but ************** ** *** possible.

day performance comparison 20

Dark ***** ******* (

** **** ****** **** IR **, ******* *** strong ** ***** ***** (~10'/~70 ***) ** *** dual ****** ******, *** slightly **** ** *** single ****** ****, **** better ***** ********** ** the **** ****** **** (line * **. **** 5)

dark performance comparison 10

******** *** ******** ** ~20' (~** ***), **** facial ******* *** ***** available ** *** ********** ***** they *** **** ** the ****** ****** ******.

dark performance comparison 20

Poor ** ********

** ******** ** *** HDBW4231FN *** ****, ******** illuminating *** ****** ** the ***** ***** ******* the ***** ****, *********** reducing ******* ** *** subject *** *****.

weak ir at edges of imager fovs

************, ** *** **** imager ******'* ********* ** range (***/~**'), ************ ** weak, ****** ********* ** possible. ** ********, *** single ****** ***** **** not ******* ******* ** the ******* ** **** range.

weak ir illumination at spec range

Low ***** ***** *******

*******, ** *** ***** (~2 ***) *** ****** into ***** ****, *********** was ********** ****** ** the **** ****** ******, with ******* ******** ******* in *** ****** ****** dome, ****** **** ******* overexpose **** ** *** test *****.

night color performance comparison

WDR ***********

*** *** ****** ** a ********* ******* **** an ******** ****, **** lux ******* ********** *** due ** ***** ***** ~1,200 ***, **. ~** inside.

wdr test field of view

**** ******* ********* ********* in **** ********, **** facial ******* ********** ***********, though *******, ******* ******* backlight, *** ******* ******* in *** ****** **** beside *** ****.

wdr comparison

*********

********* ** *** *** Dahua **** ****** *** similar ** *** ****** imager ****** ****** *** day, *** ********** ****** at *****. ******** **** comparable ** ******'* ***-****** dual ****** ******, ****** note **** ***** ******** integrated **, ***** ****** does ***. ************ **** taken **** ******** ****** in *** *****, **** smart ****** **.

bitrate comparison

Broad *** ***********

*** ******* *** *** HDBW4231FN *** *****, **** both ******* ********** *** streaming *** *.*** ** all ***** ******. *******, H.265 ********* *** *** supported ** ******** ** Exacq. ****** *** ****** in *** ***** ****** Avigilon. *** ***** ****** used **** **** ******* license *** **** *******.

Versions ****

*** ********* ******** ******** were **** ****** *******:

  • **********: *.***.*******.**.*

*** ********** ** **** in *****.

Comments (5)

*** ***** ******** ***** streams *** **** ******?  

***!

** ***** *** **** positions **** *****, ** would **** *** **** to **** **** ** video ************ ***********.

* **** * **** of *** ** *****, and * ******* *** same *****. **** *** about ******* ** *** apart ** ***** ****. They *** ** ********** fixed *** *******. ***** make **** ***** ****. Now * **** **** some ** *******.

* **** **** **** is * ****** *****. But * ** ****** to *** ****** ** work **** ***** ***. If * *** ** via ***** *** * only *** * ******, but * ** *** motion ** **** ******. If * *** ** via ***** * *** both ****** ******* *** unable ** *** ******. Is ***** ********* *** guys *** ** *** motion ** **** **** both *******? ** ** could *** **** ** what *** *** **** adding **** ** *****? This ** *** ****** under ***** ** ****** integrations. ***** **** *** guys **** **** ** get **** ** ****.

Read this IPVM report for free.

This article is part of IPVM's 6,367 reports, 855 tests and is only available to members. To get a one-time preview of our work, enter your work email to access the full article.

Already a member? Login here | Join now

Related Reports

AVTech ~$70 IP Cameras Tested Vs Dahua and Hikvision on Dec 04, 2019
Taiwanese manufacturer Avtech is taking direct aim at low cost leaders Dahua and Hikvision with ~$70 starlight and white light illuminator...
Axis ~$150 Outdoor Camera Tested on May 21, 2019
Axis has released the latest in their Companion camera line, the outdoor Companion Dome Mini LE, a 1080p integrated IR model aiming to compete with...
Dahua Repositionable IR Multi-Imager Camera Tested on Apr 16, 2019
Dahua has released their first repositionable multi-imager camera, the Multi-Flex 4x2MP, claiming integrated IR, true WDR, and flexible...
Hanwha Dual Imager Dome Camera Tested (PNM-7000VD) on Oct 18, 2018
Hanwha has introduced their first dual-imager model, the PNM-7000VD, a twin 1080p model featuring independently positionable sensors and a snap-in...
Axis ~$100 Camera Tested on Jul 17, 2018
Axis has released their lowest cost camera ever, the Companion Eye Mini L, setting their sights on a market dominated by Hikvision and Dahua. Can...
Hikvision PanoVu 20MP Flexible Camera Tested on Jun 01, 2018
Hikvision has released their first repositionable multi imager cameras with integrated IR included, atypical in competitors. We bought and tested...
Hanwha Wisenet X 5MP Camera Tested (XNV-8080R) on Feb 13, 2018
Wisenet X is Hanwha's high-end camera line. We tested their Wisenet X 1080p camera last year. Now Hanwha is offering 5MP cameras listing super low...
Dahua Multi-Imager Tested (PDBW8800-A180) on Nov 28, 2017
Dahua has released their latest generation of multi imager models, including the PDBW800-A180 [link no longer available], a 4x1080p dome model...
Hikvision 4K IR PTZ Tested (DS-2DF8836IV-AELW) on Nov 10, 2017
The IR PTZ trend continues, now with 4K resolution, with Hikvision releasing its DS-2DF8836IVAEL-W camera [link no longer available], a 4K 1/1.9"...
Axis P3225 Mk II Tested Vs. Original on Jun 20, 2017
Axis has released a number of 'Mk II' versions of their cameras, which are the same fundamental camera but with specific improvements. We tested...

Most Recent Industry Reports

Verkada: "IPVM Should Never Be Your Source of News" on Jul 02, 2020
Verkada was unhappy with IPVM's recent coverage declaring that reading IPVM is 'not a good look' and that 'IPVM should never be your source of...
Vintra Presents FulcrumAI Face Recognition on Jul 02, 2020
Vintra presented its FulcrumAI face recognition and mask detection offering at the May 2020 IPVM Startups show. Inside this report: A...
Uniview Wrist Temperature Reader Tested on Jul 02, 2020
Uniview is promoting measuring wrist temperatures whereas most others are just offering forehead or inner canthus measurements. But how well does...
Dahua USA Admits Thermal Solutions "Qualify As Medical Devices" on Jul 02, 2020
Dahua USA has issued a press release admitting a controversial point in the industry but an obvious one to the US FDA, that the thermal temperature...
Access Control Online Show - July 2020 - With 40+ Manufacturers - Register Now on Jul 01, 2020
IPVM is excited to announce our July 2020 Access Control Show. With 40+ companies presenting across 4 days, this is a unique opportunity to hear...
Hanwha Face Mask Detection Tested on Jul 01, 2020
Face mask detection or, more specifically lack-of-face-mask detection, is an expanding offering in the midst of coronavirus. Hanwha in partnership...
UK Government Says Fever Cameras "Unsuitable" on Jul 01, 2020
The UK government's medical device regulator, MHRA, told IPVM that fever-seeking thermal cameras are "unsuitable for this purpose" and recommends...
Camera Course Summer 2020 on Jun 30, 2020
This is the only independent surveillance camera course, based on in-depth product and technology testing. Lots of manufacturer training...
Worst Over But Integrators Still Dealing With Coronavirus Problems (June Statistics) on Jun 30, 2020
While numbers of integrators very impacted by Coronavirus continue to drop, most are still moderately dealing with the pandemic's problems, June...