http://electronics.stackexchange.com/questions/173489/how-to-amplify-little-signal-of-a-photodiode-using-an-op-amp?rq=1 http://www.glacialwanderer.com/hobbyrobotics/?p=16 http://www.cdotson.com/2014/09/dslr-lightning-trigger/
download https://www.microsoft.com/en-us/download/details.aspx?id=36998
http://en.wikipedia.org/wiki/Ken_Burns_effect