This article provides new information updating an Oct 2006 study
comparing light sources for camera phones. The original report, "Get
enlightened about camera phone flash units -- compare xenon to
high-current LEDs," compared light power and light energy measured over
time using camera phones ranging from 1.3 to 3.2-megapixel resolution.
This new report includes data captured from higher resolution,
5-megapixel camera phones released in the last year, and also considers
the technology advancements in camera sensors, xenon flash units, high
power white LEDs (WLEDs) and LED flash drivers.
