Hi Folks, A request for some advice : We will be having our annual stock check over the next few days and I have been asked to record some of the functions within the factory. I'll be using the 550EX flash under indoor sodium lighting, is there anything I should be cautious of, or any particular filters I need to use on my lens? My preferable lens will be the 28-135 IS mounted on a 50e. Thanks, Bob * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************