I'm looking at the Sony IR light for night photography & probably trying to DIY an IR battery-power using 5mm LEDs but not sure whether is it possible & what's the spec (how many nm how many mcd) I need to look for? /ubbthreads/images/graemlins/help.gif how many units will be needed to have an effective 10-20m range?
http://shopper.cnet.com/Sony_Infrared_Light_HVL_IRM/4014-6456_9-20648864.html?q=
TIA
http://shopper.cnet.com/Sony_Infrared_Light_HVL_IRM/4014-6456_9-20648864.html?q=
TIA