His work often involved translating the compositions of other masters into this velvety medium. He focused on tonal depth rather than sharp outlines. This approach allowed for a subtle rendering of skin textures and fabric. While many of his contemporaries in the late Dutch school favoured clear colours, de Groot utilised the deep blacks of the mezzotint process to create drama. His prints demonstrate a technical mastery of light and shadow that defined the late Baroque period in the Netherlands.

Modern collectors appreciate de Groot for the atmospheric quality of his prints. The deep, velvety textures of his mezzotints provide a sense of quietude that fits well in contemporary interiors. These works offer a sophisticated alternative to more common Dutch etchings. His prints capture a specific moment in art history when technology allowed for a new level of realism in paper-based art.