Ahh ok... I suppose if i cut into the right place on the transistor, i could make my own phototransistor (and have the 3rd base pin D:)
Here's what concerns me..
Notice on the camera circuit, there's a dead short between + and - of the camera circuit, sure the current will be limited by the intensity of the light shining on the detector (making it low) esp with a 270ohm resistor...
But what happens if more current was to flow, is that not a direct short on the camera side? or is the current just too low to worry?