I bought a really cheap macro adapter by Pixco for the not so cheap Leica M9 Monochrom, and it is fairly useless. When I look through the viewfinder to focus, nothing happens when I turn the lens barrel, and even when I step forwards or back the focus changes in the viewfinder, but bears no relation to what is actually photographed. So, it's pot luck, snapping away. I soon gave up. These are the best out of about twenty shots. Still fun, though, despite the chance factor, or maybe because of it.