Key ********
** *** *****, *** Hikvision **** ***********'* *** light *********** *** *** best ** *** '***** low *****' ******* ****** by * ******** ******. Here ** ** ******* that **** *** ********** (field **** *****, ***' away / ***' **** FoV):

********** ** ***** ******** moderately ****** ******, ********** in **** *** ***** scenes (~*.** *** *****) and ** ******* *****. However, ** **** ****** at ****** ****** (~***' distance/150' ****), *** *********** model ****** ************ *** integrated ** ******, ***** illumination ******** *** **** at **** *****.
**** *** ****** ******
*********** *** ********** ****** using *********'* **.** **** compared ** *** ***** F1.5 ***** ******** **** the ******. *******, *** 6026 ************ ***** ******* tested, **** **** *** higher * ****** ****.
*** *********** ** ***** F ****** ****, ****** imager *** ***** ********** combined *** *** ******* performance.
***
*** *********** *** ****** than *** **** ***** and ******* ***-**** ******* strong *********, *** **** in *** ***** ** dark ***** ** *** scene.
********* ****
******* *** ***** ******** of ******* ****** ***** default ******** (~***, ** FPS *.***), **** **** double *** **** ***** and *** *** ******* IPC542E-DU.
*** *.***+ ******** (******* quantization and *** ***********) ******* bitrates ** **** **** light *** **** ****** significantly.
*******
*** **-***********-* ***** *** ~$600 *** ******, ********* an **.* *.*-**** ****. The ******** **.** **** sells *** ** ********** ~$300 ******. ***** ** no ******** *** ********** the ****** *** **.** lens, **** *.*-**** *** 11-40mm *******.
*** *********** **** (**** *.*-**** lens ******, ~$***) ** priced **** ***** **** 1/2" ***** *** ***** models, **** ** *** Axis ***** *** **** VB635, **** ~$*,*** ******, as **** ** **** ~1/3" *********** **** ***** manufacturers, *** *****/*****, ($***-**** online).
$*** ** ****** ** price ** ****** **** as *** ******* ***-**** (1/2.8") ** ******* ****** (1/2").
***************
*** *** **** *** light *********** ***** ** cannot ** **** ** beyond *** *****, *** Hikvision *********** **** ** a ***** ******. *******, integrated ** ****** *** serve ****** ** **** applications, **** ** ******* or ******* ***** ******** scenes.
Positioning ******
****** **** *** **** show **** ********* *** compete ** *********** *** featureset, *** **** ** low *****, ** **** are ************ ***** ***. With ***** ****-*** ****** matching ** ********* ******-******** competitors, ** **************** ************ ******** ** ***** to ****, ** ** has *** *** **** 1-2 *****.
** *** **** ****, for **********, **** ****** that **** ****** ******** to ***** ******** *********** as ** ****** *** higher *****.
DarkFighter ****
*** **** ** **** one ***** ** *********'* DarkFighter **** [**** ** longer *********]. ***** *** others ** ******, ****, and ********* **** *******, all ** ***** *** 1/2" ** ****** *******, aside **** *** */*" speeddome *****. ** ********, major *********** **** ** Axis *** **** **** only * ****** ***** using ****** **** */*" sensors.
Physical ********
*** **** ** ********** similar ** ***** *** models, ********* *** *********. Most ******* ** *** size ** *** **.** lens ******** ** **** the ****** **** ******* 3.5-15mm ***** *****.

*************
************* ** *** **** is ******* ** ***** Hikvision ******, ****** ** elements *** ***** ****** have ******* ** *.*.* (***** ***** *** ****** version).

**** **** *** **** includes * ****** ** built ** ********* ** addition ** ******* ****** and ********* ******. ** plan ** ***** ***** in ** ******** ****.
Hikvision **.** "*******" ****
** **** ****, ** used *********'* *********** ****, the HV0733D-6MP "*******" *****. ******** to *** ***** **.* 3.8-16mm *****, ** ******** ********** improvement ** *** *****, with * ******** ***** and ********** **** *****. In *** **** ***** (below *****), *** **** chart ******* ******* *** the ******* ******* ***** *** F0.95 **** ***** ** was *** **** ***** the ***** **.* *****.


** ****** **** **** with ***** *******, ** well, ** *** ***** *** ***** ** Lens ****** ******.
Low ***** ***********
** *** *****, ~*.** lux, *** **** ****** outperforms *** ***** ***-** models ******, **** *** best ******* ******* *** a ******** ******** ** chart **********. *** ** equipped ********* **** ******** slightly ******* ****** ** both, ****** ** * small ******.

*** ********** ***** ***** relative *********** ** *** DarkFighter ****** ***** *** stock **.* *.*-**** ****.

******* ******** *** ****** to ~*.** *** ** below (*** ****** *** meter *** *******), *** 6026 ******** ********* ** the ******* *** **** chart, *** ** ****** outperformed ** *** ********** IR ****.

****** *****/**** ***
** **** ****** *** cameras' *********** ** ***** in ** **** ***** using * *****, ~*** HFOV/~100' ** ******.
** **** *****, *** 4132's ** ** ****** to ******* **** ************ (~30m ** ***** *********), making *** ******* ****** to ****** **** ** the ****, ***** ******* shows *** ********** ******* the ******* **********.
***** *** ******** ***** from **** ***** ** a.*** ******* (~*** **).

*** ***** ***** ***** our ******* *********** *** DarkFighter **** **** ~***' in *** ***** ***** above, ************* *.** ***:
**** **** ***** ***** choose ****** ***** ** models, *** ***** ********* use * ******** ***** of **** **** *** ~90 ******* **** ****. Additionally, ******** ** *** further ******* *******, *** results ** ***** ***** cost.
WDR ***********
*** **** *** *** of *** *** ********** WDR ******* ** *** tests, **** **** ** our ********* *****, ******* showing ******* ** **** the ******** ******* ***** and **** **** ****** the ****.

******** ** ******, *** 6026 ******** **** ** the **** ****** ** the ******* *** ** dark ***** ** *** scene, ***** **** *** Uniview *******. *******, ** is ******** ***** ******* backlight than **** ******, **** as *** **** ***** and ******* ***-****, ***** show **** *********** *** noise *** ******* ******* images ** *** *******'* face.

Full *****
** **** *****, ~*** lux, ****** *** ******* to ***** ******, ****** notably ****** **** ****, most ******* *** **** Q1615.

Bandwidth ***********
*** ********* *********** ****'* bitrates **** ********** ***** than ***** ******* (***** from *** ********* ****) in **** *** ******. However, ** *** *****, the ****** ****** ** just ***** ** **/*, the ***** *** *** its *** ***, **** higher **** *** ***** cameras ****** ****** *** Samsung ***-****.
**** **** ***** ************ are ***** ***** *.***, ** FPS, **** ******* ** quantization.

********* *.***+
********* ********** *.***+ ** their ****** *********, **** dynamic *********** *** *** adjustments ******* ** **** *********. ******* *.***+ **, bitrates ******* ** **-**% in *** ********* ******, reducing *** *********** ******'* bitrate ** ~*.* **/* in *** ****, **** more *********** **** ***** cameras.

** **** ** **** H.264+ ** **** ****** with **** ******* ** a ******** ******** ******.
Test ***********
******* **** ****** ***** default ********, **** *** following ******** ******* ** *** cameras:
- ******* ***** *** *** to * ******* ** 1/30s
- *.*** **** *******, ** FPS, ** ************ *** used
*** ********* ********/******** ******** were ****:
- **** *****: *.**.*.*
- ********* **-***********-*: **.*.*
- ********* **-**********-**: **.*.*
- ******* ***-****: *.*********
- ******* *******-**: ***************-**********
- ***********: *.*.*.*****
Comments (21)
Undisclosed #1
Great test!
One comment using the 0.95 F lens with other cameras, as discussed here:
Warning to anyone considering using this lens to increase low-light:
If you use this 0.95 lens with a standard 1/3" sensor, your light gains will be considerably less than when used with a 1/2" sensor. This is because the lens creates a 1/1.8 images circle, which is much larger than the sensor area. This is how a traditional sensor is dwarfed by the image circle of the Hik lens.
The Axis 1635 also has a 1/2" sensor, and not surprisingly benefits here. I would show a 1/2" sensor, but I am unsure of the exact x/y geometry, of either the Axis or the Hik, only of the area.
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Brandon Knutson
We've been using the Hikvision DS-2DF8223I-AEL "2MP Ultra-low Light Smart PTZ Camera" which has been incredible in low light. I was shocked to see that it stays in color / day mode with very poor lighting in a dark parking lot that borders a dark airport runway. When we zoom into a very dark area it will then switch from color to B/W using its built-in IR. This camera replaced a 10 year old high-end Pelco Esprit turret style analog camera with a Bosch Uniflood IR illuminator. I want one of these at my house.
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David Johnson
Ethan,
How does the depth of field fare with this very large aperture lens when wide open at night?
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Michael Miller
Suprised you didn't do any low light tests with this camera forced into color mode.
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Undisclosed #2
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Robert Wegner
John, Samsung has a SNB-6005 1/2" camera wich should be used for this test as it is a test for lowlight cameras, othervise you comparing apples and oranges. Also for true comparisons, all cameras should use the same lens, othwise again apples and oranges.
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