When it comes to using a loupe for macro work, no one does it better than jiminyClickit. His work encouraged me to try using a Sirchie loupe (5X power), like the one used to examine fingerprint images, in conjunction with my Sony F707 in its macro mode setting.
The first image shows how I set up the F707. I rested the camera on the top ring of the loupe against the UV filter. Exposures were made in the auto-focus mode using the self-timer. A single desk lamp (new curly fluorescent bulb) illuminated the field.
ISO 100, 1/125 sec at f/2.8 at 48mm focal length (macro mode)
Here are two test images:
