Only if the other one you bought is the 580EX, 580EXII or 550EX.
Why only the 5xx Series? Please help to explain.
you can blind yourself.
1 to blind, 2 to confirm
Hmmmm.... tat's something new... so 3 or more will blind more ppl around the user also?
then 1 for each eye lor..remember to use gridspot or snoot so all goes straight in..
I like honeycomb effect more.... :bsmilie::bsmilie: