Failed! Lux Meter Apps

Author: Derek Ward, Published on Sep 10, 2013

Manufacturer illumination ratings cannot be trusted, so you should use a lux meter and test yourself. Some people, though, are too lazy to get their own lux meter or want to use an application that can be loaded on their smartphone. However, this begs the question - How well do these applications work?

We tested 2 iOS and 2 Android mobile device apps named "Lux Meter" and "Light Meter". You can find these apps on either the Android Play or iOS App stores respectively.

The only paid app was the iOS Light Meter for $1.99 USD. All other apps were free.

In this report, we:

  • Test the performance of 4 mobile light meter apps against a professional Extech light meter, which acted as our baseline.
  • Compare lux measurements in a variety of scenes, highlighting the pros and cons of each app tested.
  • Offer feedback on device and app usability.

************ ************ ************* ** *******, ** *** ********* * *** ******** **** ********. **** ******, ******, *** *** **** ** get ***** *** *** ***** ** **** ** *** ** application **** *** ** ****** ** ***** **********. *******, **** begs *** ******** - *** **** ** ***** ************ ****?

** ****** * *** *** * ******* ****** ****** **** named "*** *****" *** "***** *****". *** *** **** ***** apps ** ****** *** ******* **** ** *** *** ****** respectively.

*** **** **** *** *** *** *** ***** ***** *** $1.99 ***. *** ***** **** **** ****.

** **** ******, **:

  • **** *** *********** ** * ****** ***** ***** **** ******* a ****************** ***** *****, ***** ***** ** *** ********.
  • ******* *** ************ ** * ******* ** ******, ************ *** pros *** **** ** **** *** ******.
  • ***** ******** ** ****** *** *** *********.

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

Key ********

  • *** **** ****** ** **** ******** ***-***** *** *******-***** (********) measurements, *** **** **** ******** *******. **************,***** ******* ****** *** ********, *** ** ********* ***** ** not *** ****** **** ** ******* ******* ******.
  • ******* *** ****** *** ****** ** **-**,*** *** *** *** Lux *****, *** **-**,*** *** *** *** ***** *****, ***** the *** **** *** ***
  • ******* ******* *********** *****, **** ***** ******* *** **** ** "use * **** ***** *****, ******* **** ******** ** * constant ~***-~*** *** *****, *** ******* *********** ** ***** **** light *****". ********* *** *** ** * "**** ***** *****" to ********* *** *** ******* *** ******* ** **** ***** the ***.

***********

***** ** ** ***** ******** **** ****** **** *** *** test. ** ****** ** ***** ****** ******* **** ******* ** a **** ******** ** *** ************. *** ******* ********* ** this ***** ** *** ****** ***** ***** *********** *** **** scene.

***** ** * ***** ******* *** *******. **** ** *** apps************ ** *** *** ****** ***** ******, *** **** **** accurate ** ****-*** ****** ******.

***** ** ** ***** ** *** "***** ***** ****" **** to *** ****** ***** *****.

***** ** ** ***** ** *** "*** ***** ****" **** to *** ****** ***** *****.

*********

** *** **** ** ****** ************ **** *** *******, ***** the **** ****** *** ** ***** * ****** ** ******* light. *******, ** ** ********* **** *** **** **** *** get ** *** *** ** *** ******, ***** ***** ** could **** *******. ******* **** *** ***** ** "****" ******, with ** ******* ** ****** ** *** ****** ****** **** a ****** ****** ** *** **** *** **** ******** ***** measurements. **** *** **** ******* *** *** ** ****** ***** or **** ******. ******* ************ ****** ** ** ** ** down ** ********, ******* *** ************ ***** **** **** ***-***-***-*** lux ***., ***** *** *** **** ******* **** ******* ************ (225-226-227-228 *** ***.)

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

** ****** *******, ******* ******** ****** *** ******** ** ************, and ** ****** ********* *** *** **** ******* ** ***** scenes. *******, ** * ****** ** *** *******, *** *** apps *** ******** ** ***** ** ********* *** ******* ****** measurements. *****, ** ******** ********* ***** ** *** ************ ***** light ****** (**** ** *** ****** ***** ***** ***** ( ~$*** ***) *** **** ******* ******** ******.

Comments (15)

*** *** **** *** *** ********* *** "************" *** ***** ?

******

****,

*** ****** ***** ***** ***** ** ******* ********** *** ***** for *** ***** *** ** *** *** (***** ** ****** in *** ********* ***************** ******).

* *** **** *******. * ** **** ***** ** **** better **** ****. ** *** *** * **** *** **** meter :)

*** ***** *** ***** ***** ** **** ** ********* ** they *******

*** ****** ** *** **** ** **** ***** * ****** old, ********. * ** **** ** **** ** ************ ** time, *** ** *******'* ******* ** ***.

"**** ******, ******, *** *** **** ** *** ***** *** lux *****"

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

"*** *** **** *** ******** ** ***** ** ********* *** overall ****** ************. "

* ** *** **** ** *** ******** **** **** *** informations *****. ** ***** **** ** ******* ** *** ****** sensor *******. *** ******* ** *** ** **** ********* **** devices ******* ****** ******* ** *** **** ********* ******* ********* on *** ***** ** **** ** ***********. ****, * ****** S4 ***** ** **** **** ******** **** ** ******.

* ********** **** *** *** ***** ***** ** *** **** accurate ******, *** ** *** **** ***** ** ********** **** a ****** ****** ***** ** **** ********* ** **** *************

* ***** *** *** ********, ******, ** *** ** *** know **** ********** *** * ****** ******? *** **** *************** would *** ** ******* ** ** ******* (********* **** *** phones) ** ***** ** **** *** **** *****?

** ****'* **** ** *****'* ****, *** *'** ***** *********** these **** ***** * ***** ***** ** ***** ******, *** even **** ****'** ***** **********.

*** *******, ***** ** ** *** ****** "******* ******" ***** you *** ***** *** ******* ******* *** **********. * **** that *** *** ** **** *** ****** ******* ** ***** to ******** *** *** ******* **** *** *** *******.

*****, ***** *** **** **** **** * **** *, *, 3, *, ***** **** *** ****** ***** *** ******* / cameras *** ************* ****** **** **** *** ***** ** ***** own. *****, ******...

*** ****** **** ***** ** ***** *********** ***** ** *** on ******* *** ******, ********, ***** ********* ** *** ******** *** ***** $**.**. ********?

**** ** *****! *** *** ***** ***** ****. * ***** that ***** *** *** ****** **** *********. *** ****** ***** it ***?

* ****'* *** ****** ******** **** ******* ***** *** ****... some ******** **** * ***** ****** (*** ********* ********** ********** of *** ******) ****** **** ***** *** ******, *** ** addition ** "*** *****" ****, ***** *** ******* ******* **** that **** ****** ******* *** ****** ** *** ******* ******* in *** ***** (***, ****, ********, **************, ******* *******, ******** sensor/compass, ***.)

*** **** ****, * ***'* ***** *** ***** ******* **** to **** **** **** ********** (**. **** ***** ************), *** I ***'* **** **** ****'** ********* ********** ** *** ** all **** **** ** ** ** ***** *** ****** ********** to * ***-******* ****** ******. *** ** ** ***, ** doesn't ****** *** ******* ***** ** ***, ** *** ****** useful *** **** ***********...

****,

*** ******* ***** **** ** *** **** *** ** *** One *, ******* ******* *.*.*. ****, ***** *** *** *** added ***********! ** *** **** **** ******* **** ***** ******* phone *******?

*** *** ******** ******* ******* ******* ****** *********** + ******* ******* **** **********.

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

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

**** *** * ****** *********** ** ****** ******* ** ** HTC ****** **'* ***** ******:

****'* ** ********** **** **** ** ***** ** **** ********, not *** ** *** ****** ****....

**** * ***** ** ****** **** *** ***** ** ******* cameras **** *** *** ********* * ******** *****. *** ****** time *** ***** ** *********** ** *******.

**** * ** ****** ***** ** ********** **** ***** *** PowerPoint *************.

**** * *** ******* ***** ** ****** ** * ********* expectations ***** *** **** **** *** ******* ****** *** ****.

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