*******
*** ********* **-********-** ******* some ** *** **** IR *** *********** ** have ****, **** ******* focus ******, ** ************ issues, *** *********** ** range, *** ** * price *********** ***** **** many *********** ** *** non-IR *** ******.
******, ***** ******* ******** longest **** ***** ****** note **** *** ***** provides ********** **** ****** at **** ****** *** to *** ***** **** ratio. ** **** ** a *** *******, ***** may ** ****** ****** by *****, ****** **** options.
Key ********
**** *** *** *** findings **** **** ****:
- ****** ***** ******** ** night:*** ***** ******* ***** better ** ***** **** other ** **** ** have ******, *********, *****, FLIR, *** *****, **** less ************ ******** ** track ********.
- ** ***** >***':************ *** ***** ** over ***', ******* ** other ** **** ******.
- ******* **** *****:*** ***** *** *** able ** **** ** as *** ** **** competitive ** *** ****** due ** *** ******* zoom **** (*** ** 94mm/3.2°). *********** ** **** frequently *** *** **** lenses (**** ** *** Bosch ******** **** **, 129mm/2.3°).
*******
*** **-********-** ***** *** ~$750 *** ******, **** expensive **** **** ** ** ****, such ** *** ***** SD59230TN-HN [**** ** ****** available] (~$950 ******) ** ***** ******** 5000 ** (~$*,*** ******).
******** ********
*** **-********-** ** ******* to ***** ** *** cameras, ****** *** ** LEDs *** "******" ****** a ***** ********* *** only ******* **** ****** on. ** ** *** of *** **** ******* IR **** ** **** seen.
** ****** *** ******'* construction ** **** *****:
*** ********* ** ********** smaller **** ******** ** ***, ***** ** * side ** **** **********.
*** *********
*** ** *** *** issues ** *** ******* is *** ******** ***/**** mechanism (*******, *****, **** rings, ***.), ***** *** first **** ** *** camera ** ****. ****** our **** *** ********** short, ***** ** ****, and ** ****** ******* on ********* ** ***** components, ** ******* ** immediate ******. *** *** tilt ****** ********, ******* issues, *** ** ******* no ****** "*****", **** frequent ********** ***** *** models.
*************
************* ** *** ***** is ******* ** ***** Hikvision *******. **** **** the ****** **** *** include*********'* *.***+ ***** *****, ***** ** ****/**** new ******.
Focus ********
*** ********* ** *** offered **** ** *** best ***** ******** **** in ** **** ** have ******, ****** ** issues **** *** ****** slipping *** ** ***** or ****** **** ******* to ********* ** ***** (common ** ***** ****** models).
** *** ***** *****, we ****** ******* ******** with *** ****, **** over ***' ** **** in ***** ** *** camera.
******** ** ******
***** ******** ** *** Hikvision ***** ** ************* faster **** ***** ** PTZs, **** ** *** sample ***** ***** (********* on ****, ***** ******** 5000 ** ** *****). Both **** ***** ******** at ~***' *****, **** the ******* ******* ** about ~***'.
IR *********** ***********
*** **** **** **** four ****, *** *** near/wide ***** *** *** for ***/******. **** **** of **** **** **/*** and ****** ***** ********* on **** *****, **** here:
** *** *****, ******** were ******* *********** ** over ***' *****.
IR *****/***** *******
*** ** *** ******'* more ******* **** *****, PPF ** ******* ******** was ******* ******** ** competitive ******, ******** ******* moderately. **** ** ***** in *** ***** ********** below. ***** ***** ****** (50-250') **** ****** ** ~ **.*'/** *** ** target, ** ~***' *****, the ****** ***** **** to ~**'/** ***.
*******
*** ********** ***** ***** image ******* ** ***** ranges during *** ***.
Limited **** ***** **. ******
*** ********* ****'* **** range (*.*˚- **.*˚, ***) is **** ******* **** many **** ** **** tested, **** ** ******** ******** **** ** (*.*˚ - **˚, ***).
**** ******* ** ******* details ** **** ******, as **** *****. ** have ******** (** ***) *** narrower ***** *** ** the ********* ***** **** for **********. *** ***** camera ******** ***** ****** details ** *** ******* here, ***** ********* ** more *********, ******** *******.
Bandwidth ***********
** ******** ********* ** the ********* *** ***** IR **** ** *** live ******** *****, *** and *****. ****** *** day, *** **** *** over * **/* ***** than *** ******** **, under * **/*. ** night, *** ******* **** closer, ~* **/* **. 3.74 ** *****.
Test **********
*** ****** *** ****** using ******* ********, **** framerate *** *** **** set ** **, **** quantization ~**.
******** *.*.* *** ****.
Comments (7)
Undisclosed #1
Nice report. Looks like a good value.
One question: The Hik cannot zoom in as far as the others, but it also looks like it can't zoom out as far either, yes/no?
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Michael Struwe
Please add metric systems to your reports - important for us living more than 5000' from Hawaii
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Undisclosed Manufacturer #2
In Bosch camera there is a profile call HD bandwith optimized, not default. This improve/reduce the bandwith cunsumption. Thx
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David Johnson
Just got one of these for a client - nice so far. Our environment is pretty harsh - salt & sun - we'll see how this fares.
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Undisclosed Manufacturer #3
The cam looks good for the price. One downside is that the Lens / IR LED area cannot be truly vandal proof. I did not see any IK ratings on the Hikvision / Bosch datasheet. But if that is not a requirement for critical infrastructure, the cam is solid for the price.
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