Got into Privilege (twice), Amnesia (Twice), Es Paradis, Eden, and Space this July, each time accompanied by my trusty digital camera.
Only got frisked at Privilege the second time (didn't have que-jump tickets the second time) and Amnesia the second time (again didn't have que-jump tickets the second time) but must have been lucky, as the bouncer didn't find the camera, which wasn't down the kecks.
Best advice I can give from experience, is either get que-jump tickets... i.e. buy your tickets from spotlight before leaving for Ibiza, or, the two times I was frisked, the camera was in an obscure pocket in 3/4 style trousers, so this seems a good bet also.
Did notice a lot of girls bags being searched too, so girls, don't think thats safe, although someone did suggest putting your camera into a empty fag packet if its small enough, as they don't open the packet.
Once inside no-one batted an eyelid when I was snapping away.
Tony