Hello Ken and Ken. I believe that when we prees test button on 420EX (which I own too) it fires with full power. Why I think so? Because it recharges 4.5s with NiCd batteries. Which is exatly what manual says -- full recharge. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
