Luxi iPhone Light Meter Tested

Author: John Honovich, Published on Oct 04, 2013

Adding a free app to your smartphone to measure light levels sounds great but our recent test showed how poorly they performed. However, a new iPhone accessory, Luxi, claims to deliver far more accurate results at a fraction of the cost (online for $29.95 USD) of professional lux meters ($100+).

Here's what it looks like attached to an iPhone:

In this report, we:

  • Test Luxi's performance at default and calibrated levels against a professional Extech light meter, which acted as our baseline.
  • Compare lux measurements in a variety of scenes.
  • Offer feedback on usability and the importance of calibration.

****** * **** *** ** **** ********** ** ******* ***** levels ****** ***** *** ********* **** ****** *** ********** *********. *******, * *** ****** *********,****, ****** ** ******* *** **** ******** ******* ** * fraction ** *** **** (****** *** $**.** ***) ** ************ *** ****** ($***+).

****'* **** ** ***** **** ******** ** ** ******:

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

  • **** ****'* *********** ** ******* *** ********** ****** ******* * professional****** ***** *****, ***** ***** ** *** ********.
  • ******* *** ************ ** * ******* ** ******.
  • ***** ******** ** ********* *** *** ********** ** ***********.

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Key ********

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  • * ******** *********** ** ********* *** ************ *** ***** ****** (**** than * ***.), *** **** *** ***** ******.
  • **** ******** **********, ****'* ************ *** ***** ** *** ~*-* lux.

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***** ** ** ***** ******** **** ****** **** *** *** test. ** ****** ** ***** ****** ******* **** ******* ** a **** ******** ** *** ************. *** ******* ********* ** each ***** ** *** ****** ***** ***** ***********.

***** ** * *********** ********** *** ********. ******* *********** *** highly **********, *** ******** **** **********. ** ****** ****** **** the *********** ******* ** **** ***** **** ** **** *** users. *********** ******* ****** ****:

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  • *** ***** ***********: ******** **********: -*, *** *********** ********: .***

 ***** ** ** ***** ** *** **** ***-** *** *** next ** *** ****** ***** *****.

*********

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***** ** * **** ******** *****.

 

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Comments (3)

**** *** ** *********** ****** *********. *'* ******* ** *** if ****** ****** **** ******* ***** *** ***********, ** *** many ***** ***** **** **** *** ******* *** ****.

*** **** * **** **** **** ** ********* ** **** App **** ******** ** ******* **** ***** **** ***-***********. **** poor ********* ******* ******* ************.

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