What is "miniaturists"

Usage examples of "miniaturists".

This was too perfect an image of him: the contemplative, staring at the sun, his every pore and pucker demanding the attention of Jaffe's aching retina, as if his portrait had been painted by a thousand miniaturists, all of whom had been granted an inch of their subject and with brushes bearing a single hair rendered their portion in nauseating detail.

Arnfeld a somewhat grisly sense of assurance that the three miniaturists who were working on the procedure (so calmly, it would seem—so calmly) were condemned to death as firmly as her husband was in case of—anything untoward.