Quote:
Originally Posted by newday07
How many LEDs are there in an ereader? Did you consider the exposure time? |
Irrelevant. It's low resolution, I think on the 6.8" Kobo H2O HD Aura, 15 on ONE long edge and 11 on one short edge. Almost certainly scanned and then interpolated to work out finger position (proportion of two adjacent vertical and horizontal beams).
The risk simply doesn't exist.
Nothing visible AT ALL in a dark room and camera on nightshot. The SINGLE IR LED on the satellite remote at 1m almost blinds the camera. The remote about 1000 times less than IR from a halogen lamp.
The dusk illumination LEDs are much more power, maybe 50x at lowest setting. A LED backlight for LCD (phone, tablet, TV - Domestic "LED" TVs are LCD) is 100s of times more power, admittedly not IR, but the IR LEDs are "almost" red, that's why phone cameras, video cameras, SLR cameras etc can't filter them out.