Dahua 4MP HD Analog Tested

By Ethan Ace, Published Nov 10, 2016, 10:47am EST

A few years ago, analog was SD only.

In the past few years, HD analog, up to 1080p, has become commonplace.

Now, HD analog is doubling its max resolution to 4MP.

We bought and tested two of Dahua's new 4MP CVI 3.0 cameras, the A43AG23 [link no longer available] turret/eyeball dome and the A43AB23 [link no longer available] bullet, along with the C52A1N [link no longer available] DVR to see how this new generation stacks up against 4MP IP.

*******

*****'* *** ** ****** cameras ********* ******* ***** quality ** ** ************ in *** ***** ** full *****, *** *****, and *** ******, **** cameras ****** ~**-**% ***** than ***** ** ************.

************, **** ***** *********** has **** ********, **** cable ******* ** ** ~1,500' (~****) ******* ****** to ** ******* ***********.

*** **** ********** ** CVI *.* ******* ** framerate, ** *** ****** tested ***** *** ******* of **** ** *** at *** ********** (*********), not **** ***** **** found ** **** *** IP *******. *******, ** most ************ **** ** not ****** ** *****, as******* ************* ********* ***** ** FPS.

Outlook **. **

***** ***** *.*'* ******* image *******, ***** ***** point, *** ******* ** reuse ******** ****, ** furthers ** ******'* ********* as * ***** ********** to **. **** *********** is ****** ** ** attractive ** **** ******* for ****** *********** ** smaller ** ******* *******.

Not ********* ******** ******** - *** ********

*****'* ******* "*.*" ******* omits **** ******** ******** which ***** *** ********** announced.

  • ** ***/*** *******:*********, *** ****** **** not ******* ***** ** analog ************, **** ** TVI ** ***,******** ** ***** "*****-****" marketing. ***** **** **** this ******* ****** ** available *** ******** ** December.
  • ** ***** ** *** coax:************,***** ** *** ******** *** ** ********* until ******** ** *** second **** ** ****. Power *** ***** **** be *** ********** **** current *********.

**** **** *** ********** TVI *******/********* (*.*. *********) claim **** ** ***** features, *** ********* ***** American ******* ****** *** not *** ********.

*******

***** ***** *.* ********* tested ** **** ****** is ****** ** *******:

  • ******* *** ** ****** dome: ~$*** *** ********* street *****
  • ******* *** ** ******: ~$135 ********* ****** *****
  • ****** *-******* *** ***: ~$175 ********* ****** *****

*** *** ******* *** priced **** ***** ***** IP ***********, *** ***-*********-* [link ** ****** *********] and ***-*********-* [**** ** longer *********], **** ~$***-*** online.

**** ******* ** ***** $20-30 ****** **** ***** CVI ************, **** ** the ***-******* ****** ** HAC-HDW22A1EN.

Physical ********

*** ***** *.* ******* are ******* ** ** analog ******, **** ******** outputs *** *** *** SD ***** *** * power *****. **********, *** cameras **** *********** *** same ** ***** ** counterparts, **** ****:

************, *** ****** ** typical ** * ******* HD ****** **** ** have ******, **** *** inputs *** ***/** ****** video, */*, **** *** VGA *******, *** *****. The ***** *** **** are ***** *****.

Long ***** ****** ***********

** ****** **** ********** image ******* **** ******* of ******* ***** **** ranging **** ***-*,***', **** below.

** *** *****, ******* up ** ***' *** very ****** ****** ** image *******, **** ***** and ******* ******* ** shorter *******. ** *,***-*,***', smearing *** ************ *** visible, ****** **** ***** impact ** ***** *******. At ****** *******, **** 2,000', ************ ** ********* and ******** **** **********, reducing ****** ******* *** test ***** **********.

Image ******* **. **

** ****** *** *** CVI ******* ******* ******* 4MP ** ************ ** see *** **** *********.

**** *** *** *****, image ******* ** **** similar. *** *** ****** displays ******** **** ***** and ***********, *** ********* details *** *******.

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

** **** ****** *** 4MP *** ******* ** this *** ***** ** see *** **** ********* against *** ** ******.

******* *** ****** ********* of *** **** ******** door, *** ******* ******* about *** ****, **** solid ******* ** *** subject *** **** *****. However, ** *** ****** area ** *** *****, details ** ***** ****** are ******* *** ** artifacting *** *****, ***** facial ******* ** *** Hikvision ****** ****** ********.

Smart *****/********* **********

********* *** ***** *** HDCVI ******/*** **** *** Dahua's *** ** **********, HDCVI's ******** **** ******* higher **** *** *** night. ********* ******** **** also ****** ** *********'* 4MP ****** ****, ****** daytime ******** **** *****.

**** **** *** ****** includes *****'****** *.***+ ***** *****, ** ** *** Dahua *** ** ******* tested. ********* *** ** models *** ********.***+.

Test **********

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

  • ***** ****** ***: *.***.****.* build ****-**-**
  • ***** ***-********: *.***.****.**.* ***** 2016-07-08
  • ***** ***-*********-*: *.***.****.**.* ***** 20160623
  • ********* **-*********-*: *.*.* ***** 160525
  • ********* **-*********-*: *.*.****** ******

Comments (10)

Great test...

Any thoughts on why the IP camera version of h.264+ (daytime) is 6x more efficient than the DVR version? Is it added noise from the cable? Can the parameters be set identically in both?

At 1,000-1,500', smearing and desaturation are visible, though with minor impact on image quality. At longer lengths, over 2,000', desaturation is prominent and smearing more pronounced, reducing facial details and test chart legibility...

Just curious, is most of the wire spooled?

Yes, most of it is spooled. That's intentional, as it's a more difficult test since there's so much potential for interference. But also because walking out half a mile of cable presents certain logistical challenges...

...also because walking out half a mile of cable presents certain logistical challenges...

For sure. I was wondering what effect it might have. Spooled UTP, for instance, can degrade the signal because of crosstalk.

But seeing that its a shielded, single signal, I'm guessing it would not be affected in the same way.

Interesting to see the length of cable runs improving. I don't see as noticeable of smearing as anticipated at the 1500' length. Would/does RG-6 lessen the smearing and increase the usable distance?

RG-6 should absolutely lessen the smearing. We don't test with it because it's much less common in surveillance than RG59 and the micro coax you see in pre-boxed kits, but it's an option for longer runs.

Is it the cameras that are limited to 15fps or the DVR?

Sounds like its the analog HD transmission method thats the real limiter, though this particular camera and/or DVR may not be capable in any event.

The limitation is in the DVR.
Tale a look at the specs of a 4MP HDCVI camera here: http://www.dahuasecurity.com/products/hac-hfw2401r-z-ire6-9151.html

The Dahua IP camera's day bit rate is 10% of that of the Hikvision. Is there any picture quality compromise with compression artefacts when high levels of scene change occur?

Switchabilty is available via UTC controller.

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