Hello everyone, I am a wedding photographer, and I have a wedding the coming Saturday, I would like to know if : My two Hensel's, the 500 pro plus, that have built in radio slave (slave capability), (and my 500EX II that I maybe will put on a tripod set as slave,) will cooperate with the Pocket Wizard II ?I will buy one these days, and I attend to mount it on my Canon 400D ? Should I go ahead with purchasing the Pocket Wizard ? Or what about Hensel's transmitter, Ofcourse it will trigger the Hensel's. But can it trigger my Canon 580 EXII if I set it to slave? I don't know why, but "Pocket Wizard II" have better resumes by various users. Marc Williams - Franklin/Mich said:- "If you are using the Hensel slave trigger at a wedding, everyone who fires their little point & shoot camera will fire your strobes. Check if your Hensels are radio ready units ... if so, they use propritary technology that I do not think is compatible with Pocket Wizards. Not a problem, the Hensel radio transmitter is better than the Pocket Wizards in terms of individual strobe control at the camera. You can individually adjust each Hensel head to whatever level you want using the Hensel shoe mount radio sender. It's much smaller than a Pocket Wizard also. Go to the Hensel web site for complete info. If your strobes are not radio ready, you will need a Pocket Wizard for each strobe, plus one in the camera's hot shoe. The Canon flash is not compatible with the Pocket Wizards unless you connect a Pocket Wizard to that also." ps what is radio ready And what if I wish to use two 580EX II. as slaves. will the pocket wizard cooperate with them, without making me attach Pocket wizards on them to ?