I put an extension tube on my Sony NEX-7 and attached a 75mm Voigtlander lens to it with an M-mount to E-mount adapter. The tube was only 7mm, but it was enough to get the camera up close and personal. I focused by moving the camera in and out, rather than using the focusing ring.
Here are the results, all shot within 150 feet of my front door. Some cropping has been applied to each image.
I own a couple of macro lenses for my Canon. I might just sell one of them.