Who Killed IRE Levels?

Not too long ago, IRE levels were commonly included in minimum illumination specifications, e.g., .1 lux f/1.2 50 IRE

A few manufacturers still include the IRE level, but it's definitely a minority of IP camera manufacturers.

The goal of using IRE was to define a standard level of contrast so there was uniformity in when one decided an image was no longer any useful. Since images progressively get worse in low light, you need some metric to decide what lux level to declare as minimum illumination.

IRE is a "unit used in the measurement of composite video signals."

The problem with IP cameras is that you no longer have a composite video out, you have frames / packets. So even if you wanted to use IRE, you cannot.

Can anything be done here? Anyone have any advice.

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**** ** * **** **** ********. * *** ****** ******* when ****** **** *** ***** ***** *** *** ******* *** included. *** ** ** ******* *** *** ** ** *** camera?

***** *** ********* *** ******* ** **** ** ******* *** IRE?

*. ***

*. **** ** ***

****, **** ********.

**'* ***** ******* ** ****** ************* *** ************ ******** *** SNR ** **** :)

** *** ****, * ** *** **** ** *** *** compare **** ****** *************. ** * **** **** *** **** the **** ** **** *** ****? * ***'* ****, *** I ***'* ***** **.

** **** ** *** ****** ** *** ***, *** ******.

****** *** ******, ****** ****** **...

****** ** *** ** ****************** *******, ****** *** ** ******* *********** (*****?), *****. ******** *** what *** *** ** ****, *** ***** ** **** ** all?

*******,

***** ****** ** **** ******* ** *** ******* ** ***?

*** **** ******** ***: *** ** ****. ** ** ** BNC, **** *** ** ****** ****/*** ******, ***** *** *** measure *** *** **** **** *** ******** **********. ** ** go ****, ** ** ***** *******, *****? ** **, *** do *** ******* ***.

*** ****** ******* * ** ***** *** ***; *** ******* part *** ******* ** ******* **** ********* **** ** *** composite *****, ***** **** **** ** ** **.

** *** *** ********** *******, *** **** *** *** ****** is ****** **** ** **, *** ** ****** *** *** cropped ** ********, ** *** ***** ******** ** *** ***** be, ** *** **** *********** **** ** *** **** ******* to ****** *** *** *********** ****************?

******* ** ********* ***, ******* *** **** *** ******* ** various ** ******* **** **** *******, ***'* *** ***** *** could **** * ******** ********** ********** ** *** ******* ***-***** performance, **** ** *** **** **** ******* * ** ****** down ** *******?

**** ** *** **** *** **** ********* ******* **** ** quarter-pixel **********, * ***'* ***** *** **** ** *** ******** contrast **** ***** ** ****. *** **'* ****** ****** ***. And ** ** ***** *** ****** ** ************* **** ** could ****** **** ** *** ***** **-*** ** ** ********, (or *** *** ** *** ****** ** ***** ****** ***);)

****** * ***** ** ****** ** ******* ** ********* *** metric **** *** ********** **** *** ******-**.

********** ** *** ****, ****** ************* ***** ****** ******* *** composite ****** ****** ** ***** ******* ** * ******** ******* to ***** *** ******? ******** **** ** ** ****, * think ***** *** * ****** ** ******* *** ******** *** levels **** ** *** ***** ***-********* *******.

*** ***** ****** ** ** *** ********. *** ***** **** a ***** **** ******** ** ** *** *** **** ** into * *** ****** ******* (***) *********** **** ******* *** ************* ***. **** ** ***** ************ **** ******** ********** ****** ***** can **** **** ** *** *****. ******* * ***'* **** this ****** *** * ****** ** *******:

  • *** ***** ** *** ********* **** ********** *** ***** ***** the ********** ** *** *****-** ****** ** *** ********. **** are **** ****** ** ******* ** ********** ******.
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*** ****** ****** ** ** *** * ******** ******** ******* which *** ************* **** ********* **** ****** ******* **** **$*****. Forgive ** ** *** ********* ***** **** ** ************* *** Blackmagic ****** *** *'* ********** ******** **** ***** ********. * previously ****** ** ********** ****** ***** **** ******* **************************** *********** *** **$*** ** $***. ***** ******** ******* ******** ********** of ******** ********** ******* ** ** *** **. ******* **** the ********** ********* ********, "********* ***** ** *********** **** *** *** ***** ********* *** a ****** **** *** ******** ***** *** ***** ***** *********. Even ****** ********** ** ***** *******, *** *********** ********* ******** makes ** ****** *** ******* *** *** ******** **** ********* waveform ********." ********** ****** **** *** ***** ********** *** ** ******* which ******** ********* ******** ********** ** **, ** *** ***** HD ** ********** ******* *** **$***. *** ******** ******* ** all **** ******** *** *** *** ***** *** * ***** this ****** *** **** ********* *** *** ******* *** **** described.

*** **** ***** **** ** *** ** *** *** **** video **** *** ** ****** **** *** *** **** ** the ********** ** ********** ***. * ***** **** ** ******* have ** **** ****** ***** ***** ** ******* ***** * US$295 ************** ********* **** ** *** **. ** *** ****** *** ** ***** ******, *** ***** set *** ******* ** ****** ** ******* **** ****** ** the *** *********** ** ***. **** ***** *** **** ** DVI ******, ** *** ******** ****, ** *** ** ***** a ********* **** ** **$*** ************* ********** ******* ********* **** ** *** **. **** ***** ***** *** ** ******* **** ******** ********** of *** ** ****** ***** *********** *** ***** *** *** way **** ** ** ** **.

***** ************ ********@ *.*

*****, *** ******* **** ********* / *******'* ******** ** **** it ** ***** ** ***** ****** ********** *** **** *** reflect ******* ** *** ** ******* ******* *** *** ***** processing **** *** ****** ******** ****** ***** ***************. ** *********** * ******** ****** **** *** ****.

****, * ******* ******* **** *** ** **** ***** ** your ******* "*********, ****** ** *** ******* ***** ***** ****." "please ***** ** *** ****.".

*** ** *****'* **** **** * ***** **** ***. *********, IP ******* *** *** ********* **********, *** ***** ********** ** work ****** *** "**" ******* **** **** *** ***** ****** are *** ****.

********, ******* **** ************* ***** ***** ********** ** ** ********** to **** ***** ********** ***** **** *********** *******.
** ** ****** ** ***** *** ***** "**** ** ** stuck ** ***** ****** **********" *** ** ** * *********** mistake.

** ** ******* *** *********** *** ******** **** ******* ** cameras **** *********.

*********, *** *** **** **** * ***** ******** ** **** your **** *** *** ******'*.

** **********, *** ****** **** *** ** *** ********** / appreciate *** **** ** ******* *********** / ********** ***** ** modern ** *******.

*** *** ********* *** ******* **** *** ***** *** *** on **** **** *** ***** ******. ***** *** **** ** the ******* / ********* ** ***** *** ****** ** ******* (or ***) *** ***** ****** ** * ***** ****** ** comparative *** ***** ***********.

****, * **** *** ****** **** * ***** ** **** discussion, ** ***. ***'* ****** ** *** ********.
** *** *** * ***** **** ***** ** ******* ******* very ***********, *** **** ****** *** **** ***** ** ** models. ***** *** *** ***** *****!

(***) ** *** ***** **** * ************'* ************* **** *** *** */*.* ** ***,** ******* ********** ***** ***?

***** ******* **** ** */* ** *** ********* (*** ** it **** ** ******* ** *** ***** ***), ************* *** manufacture ****** *** ****** **** ****. ******* *** ***** ** 0 *** ***** ** ********** **** *** *********** ** * lux ** ********* *** ****, ***....

* ********** *** ****** '**** * ******', *** ** **** case ** *****, ******** ***** ** ****** ****** ** *** mfr. ********* * ******** *** ***** ** ******** ******** ** whatever *** **** ******, *** ********** *** ******* *** *** lux ******, ** *** **** ****** ** *** *** ****:******* ** ****** *** ***** ***********. *****?

"(***) ** *** ***** **** * ************'* ************* **** *** *** */*.* ** ***,** ******* ********** ***** ***?"

* ******** ** *** ***** **'* **** **********. *** ******* are **********, ********** ** *** *** ***** ****, ****** ******* everyone **** ** ** ** **********.

**'* ** ** ***** ****** *** ** ****** ** ***** own *** **** **** **** ** **********.

* **** ******* ** *** *** ****** ** *** ** anyone *** *** ******** ** ************. *** ********, ****'* ******* is *********** *** ** *** ***** ** ******** **** ** that.

*** ******* *** **********, ********** ** *** *** ***** ****, simply ******* ******** **** ** ** ** **********.

* ****** ** "**********... ******* ******** **** ** ** ** themselves", *** *** ****** **** ******* ************* *** ** ****** their *** ******** ********/*******/********, *** ******* *** *** ***********. *** not **** ******* **** ******* *** **** **********, *****? *** instance ** *** ******* ***** ***** ******* ********* ************ ******* one *** ****** ** ********* **** ************** ******.

*** ** *** **** ***, ****** *********** ************, *** ******** of *-**** *** *** **** *** **** ** ******** "**** not ****** **** **, *** ***** ** **** **** ********!". And ** ***** **** ** ** *** ***** *** **** some ** *** ***** ******* ** ******* (****,*/*) *** *****.

* ***** ******* ** ***** ******, ** **** **** ** be ** *********** **** **** * **** *** ******, ***, as ** ******, ** ***** *** *** **** ****** ****...

********** ******* ****'* ****** ********(***) ***** *** ****** ** *** *** ** *******:

****** ****'** ******** **** ***** ***** ** ****** ****** ****** down. **** *********** ** *** ***** ** ******* *** ** unspecified **** ** *.*** ***

***, *** *** (**************) ******** ******** **** *** ***** *** tests. * *** **** ****** ** **** *** ****** ************'* specs!

***, ***** *** **** ** ** ************* **** **** *** levels, **'* **** *** ****, *** **** ***** **** **, can't ****** ** *******.

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