To produce accurate luminance values, the device using Photoluxmust be calibrated to obtain its camera response function.Unfortunately, it is not possible to calibrate all Android devices.Currently, only a Google Nexus 10 has been calibrated. So, you canuse this application on other devices, but you should not expectluminances to be accurate. During your first use of theapplication, we advise you to check the accuracy of the luminancesusing a classic luminance meter.
Photolux for Android is a limited version of Photolux for PCdeveloped by LGCB, a research laboratory, located at ENTPE (Vaulxen Velin, France).
The PC version works with images from Canon digital cameras,calibrated in luminance. It uses calibration results to produce aluminance map from pictures of a scene taken with differentsettings (HDR image principle). Photolux for PC is more accurateand provides all the tools required to assess the quality oflighting (contrast assessment, glare evaluation...). It isdistributed by Soft Energy Consultants.
For more informations, please visit http://www.photolux-luminance.com/index.php
The information provided by Photolux does not engage the legalor financial responsibility of ENTPE.