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****** ***** *****, ***** ***** ** *** ********.
  • ******* *** ************ ** * ******* ** ******.
  • ***** ******** ** ********* *** *** ********** ** ***********.

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

Key ********

**** *** *** *** ******** **** **** ****:

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

***********

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

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

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

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

*********

** *** ****** ********* ************ **** **** ***** ** ******* lux ************ *************. **** **** *** ***** ** "****" ****** to ******* ********* ************, *** ** ** ********* **** *** user **** *** *** ** *** *** ** *** ******. Attaching *** ***-** ** ******, ** ** ****** **** *** top ** *** ***** **** *** ***** ******. **** ** careful, ***** *** ***-** ***** ***** *** ***** ** **** not **** ** ** ****** ** *** *****.

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

 

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

***** **** ******** *********** ******* * ************ ***** ***** ** be ********, ** ** *** ********* ** ** * **** source ** *** ********. ***** ****** ******** * ************ ***** instead. *******, ****** ************* **** **** ** **** **** ***** ** take ***** ************ ***** **** **** ** ** *********** *** **** compliment ** * ****** ************ *** ***** *** ******* ***.

Comments (3)

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

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

**** *** ******** **** ********* ******* ** **** *** ***** we *** **** **** ******** ** ******* ********. *'** **** meaning ** *** ** ** *** *** ******. **** **** we **** *** ************ ****** ******* **'** **** *** **** on *** ***** ** *******, *** ** ****** ***'* ** anything **** **** ****.

Login to read this IPVM report.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.

Related Reports on Low Light

Camera Course - Last Day - Save $50 on Jan 18, 2018
Today is the last day to save $50 - register now. Learn video surveillance and get certified. Save $50 on the course, ending this Thursday the...
Hanwha ExtraLux Camera Tested on Jan 11, 2018
Hanwha has released the latest in their Wisenet X line, the "extraLUX" series, claiming to "capture crystal clear, true-color images in low-light...
Canon Launches World's Most Expensive IP Camera (ME20F-SHN) on Jan 09, 2018
Canon has launched the ME20F-SHN , likely the world's most expensive single imager, non-thermal, IP camera at ~$20,000. And Canon subsidiary...
Hikvision IR Bullet Camera Shootout on Jan 08, 2018
Hikvision's widely used Value Plus line claims 30m/~98' IR illumination range, on multiple lens options ranging from wide angle (100°+) to...
Resolution Tutorial on Dec 28, 2017
Understanding video surveillance resolution can be surprisingly difficult and complex. While the word 'resolution' seems self-explanatory, its use...
Repositionable Multi-Imager Camera Guide on Dec 22, 2017
Multi-imager usage has been growing strongly over the past few years. Now, a new segment of multi-imagers has taken off, with many manufacturers...
Avigilon H4 IR Mini Dome Camera Tested on Oct 24, 2017
Avigilon has released their successor to the aging Micro Dome, the H4 Mini Dome, claiming easy install, a patent-pending surface/recessed...
Axis 'Sold Out' P3707-PVE Multi-Imager Tested on Oct 18, 2017
Axis faced significant product shortages over the summer. Perhaps the most notorious and significantly sold out model was the Axis P3707-PE 8MP...
Geovision GV-EDR2100 Tested Vs Hikvision on Oct 16, 2017
A number of ADI's top selling IP cameras are, at least surprisingly to us, from Geovision. We recently bought and tested the Geovision EDR2100...
Hanwha 20MP Multi-Imager Tested (PNM-9081VQ) on Oct 09, 2017
Hanwhwa has introduced the latest in their multi-imager camera line, the PNM-9081VQ, a Wisenet 5 20MP model with four repositionable 5MP camera...

Most Recent Industry Reports

Vivint Streety Video Strengthens Door Knocking on Jan 17, 2018
Vivint is famous (or infamous depending on your perspective) for mastering large scale door to door selling. The company has skyrocketed from a...
Axis: "It’s A Question Of Trust And Who You Want To Be Associated With" on Jan 17, 2018
Who do you trust? Who do you want to be associated with? Axis is raising hard questions to start 2018. In this note, we examine these questions,...
Software House Vulnerability Allows Inside Attacker To Open Doors on Jan 17, 2018
A vulnerability in Software House IP-ACM modules allows an attacker to potentially unlock doors, or perform other actions, on affected systems....
'Defiant' Hikvision 'Strikes Back' At WSJ And US on Jan 16, 2018
The fight is on. Hikvision and their owner, the Chinese government, 'strikes back' against the Wall Street Journal and US politicians raising...
Camera Course - Last Day - Save $50 on Jan 16, 2018
Today is the last day to save $50 - register now. Learn video surveillance and get certified. Save $50 on the course, ending this Thursday the...
The 2018 Surveillance Industry Guide on Jan 16, 2018
The 300 page, 2018 Video Surveillance Industry Guide, covering the key events and the future of the video surveillance market, is now available,...
Edward Snowden Haven App Tested on Jan 16, 2018
Global coverage followed the December 2017 announcement that Edward Snowden was leading a team developing Haven, an app "that leverages on-device...
This High Schooler Is Excited About His Future Security Career on Jan 15, 2018
A common lament is that smart, young people have little interest in surveillance systems. In fact, discussions like Should Talented Young People...
"First Of Its Kind" Stove Knob Alarm Sensor (2GIG) on Jan 15, 2018
At CES 2018, 2Gig/Nortek announced the Stove & Grill Guard, a "first of its kind" sensor in the security industry, allowing users to be...
Amazon Deep Learning Partnership With AgentVi on Jan 15, 2018
Amazon is aiming to grow its Kinesis Video Streams offering that "enables you to quickly build computer vision and ML applications" in the cloud....

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact