The App can be set to display foot candles and it will allow users to get an insight of different levels of lighting and measure the amount of light received on a surface which is expressed in Lux (1m/2m). It may provide the comprehensive careful light condition information for yours life and the physical and moral integrity. Has it, uses it, you can obtain benefits a great deal! ［Operating Introduction］ @1. After the App starts, immediately carries on light detecting. @2. Tap on the center of digital dial, detecting will be stopped. Tap again, detecting restart. @3. Click the top LOGO, switch the iSight camera. Best results are achieved with this light meter by using it on the even surface of your working space as illustrated below. If your device does not feature a front camera, you can use the rear camera. @4. Different international standard uses different calibration parameter, you can slide dial to change the calibration parameter. @5. In some cases the measurement can be deceptive due to improper settings resulting from the camera’s autofocus. @6. To get a feel for how the app performs, try moving your iPhone/iPad around while measuring and review the results. Pay particular attention to exactly what the camera lens is pointing at, and how this affects the reading. @@ You can use a known reference light source, to get a matching calibration parameter. Then, using this calibration parameter to measure other forms of light environment, the accuracy will be improved. Unit: Lux (lx) = 1lumen / sq. meter. [Common Values] Illumination~~Condition 30k – 130k ~~ Direct Sunlight 5000~~~~~~ Winter Day – Overcast 1000~~~~~~Overcast dark day 1000~~~~~~TV Studio Lighting 400~~~~~~~Sunrise or Sunset Bright Office 1~~~~~~~~Deep Twilight 0.1~~~~~~~Full Moon
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