See my Pentax K1 wish list at B&H Photo.
A macro lens should perform at very high level in macro range, along with a flat field (strictly controlled field curvature). This finely detailed map was shot at a reproduction ratio of 1:10.0 to test just such a case.
Previously, I showed the same subject using the Pentax smc FA 100mm f/2.8 WR Macro.
SuperRes pixel shift mode of the Pentax K1 was used, for maximum image quality.
Images up to 28 megapixels with large crops, all from f/2.8 through f/16. This provides a detailed look at the “whole package” (lens and camera in SuperRes mode).