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					Originally Posted by  Dazrin
					 
				 
				Can you explain your testing a little more.  
 
Did you use 2 or 3 different devices to test the lighting? There is no single device that I know of that can function with all three lighting modes you describe. This would be more useful if you provide some details on the device(s) used for testing. 
 
I assume:  
Back - LCD or OLED screen with a backlight or integral light. 
Front - e-ink with a front light (Kindle Paperwhite, Kobo Clara HD or similar) 
Natural - e-ink with front light disabled (or not present) 
 
Can you confirm what devices you actually used? 
			
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 All devices are E-ink devices.
The backlight, like mentioned are your standard e-ink with built in led.
The front light, is more like a Sony PRS-700 with front light, or popup light (a bulb right above the screen, or a click on magnifying glass with led.
Natural light is no back/front light, and only using environment light, like a spot, room light, night light, or open curtain windows shining daylight into the room.