I spotted this little fellow (he was about 1/2" long) and stuck an old Nikkor 105mm macro lens on a micro 4/3 camera body (Olympus E-M5). I really like this combination. On the micro 4/3 body it provides a 1:1 macro and a field of view equivalent to 210mm.
For these two shots I actually ignored everything I have read about "diffraction" from small apertures softening the image, and I set the aperture ring at F16. [I've never really pushed things before, and typically for macros I use apertures no smaller than F8.]
To the extent that these may look "soft", I will need to do more experimenting. Rather than a lens issue, it may be simply that things aren't as sharp at high ISO setting, such as the ISO 2000 and 1600 used in these two images. A flash would have solved the ISO problem.