I dunno. When I first saw the thread title I took it literally, thought we were on the topic of baby Stradivariuses or what, until I clicked the link...
Visible cameras.... hidden cameras ... camera detectors .... camera zappers (?) the debate goes on and on. I've just plotted out a route across France from the viaMichelin website (driving down there next month). The printed route 'helpfully' shows me where all the cameras are. And what speed they're set to.
To my mind, and I know I've said this before, there's only one speed camera warning that matters. That's a series of highly visible road signs: red circles with black numbers painted in them.
And there's one surefire way of 'beating the cameras'. It involves looking at a little needle pointing to a set of figures on the car fascia.