Looking at the Sony NEX forum on DP review I saw a link to flickr of shots taken using a Marumi DHG 200 Achromat Lens, this is a simple add on to your existing lens, but a little more complex than a simple filter, under £40.00 from Amazon. The examples I saw were using the Sony E 55-210mm OSS lens, which while not an expensive lens, is pretty sharp throughout its range and one which I already owned. This was hand held, and very limited DOF as one would expect, but not bad, lots of detail in the eyes. I will have to give this a go on a tripod with focusing rack and also along with focus stacking software, I keep meaning to take macro more seriously, perhaps a winter project. Shot at 210mm.