With the 7x macro (thanks Bill, I will be sending it back soon)  for my Lensbaby I got pretty darn close to this sweet iris (a small Siberian  ‘Flight of the Butterflies’)  above is with the f 16 aperture ring and below is the 4.

Bobbie was talking about getting detail versus blur with  a Lensbaby and I realized that I rarely swap out the rings.  Another way that it makes you slow down and think I guess.