Hey all, doing some shooting over the next few weeks for work using studio lighting/strobes, probably about 6 strobes we'll be using. Anyways theres a slim chance I might be using a 5d, if not it'll be my 450d, only problem is that it doesn't support a pc sync lead to the lights. And not sure if we'll have any hotshoe adaptors so I might have to slave the strobes off the built in flash. Only thing is the cameras preflash will fire the strobes too early and I'll miss it, so I was thinking of using the flash exposure lock function to prefire the flash which should fire the strobes. Then once the strobes have recharged (real quick) take my photo and use the built in flash (lowest power setting) without a pre flash to keep the camera and strobes in sync. Anyone ever done this or got any advice?