Ricoh GRD IV is a fantastic tool to shoot close-ups. It will focus to 1 cm in the macro mode, and its in-camera high-contrast B&W produces rough but pleasing results. Here are two flower shots to show how it performs.
I tested in-camera RAW development with my Ricoh GR and I have to say that I was very positively surprised about the results I got. I think it will be handy tool for some of the shots. At least I can easily develop RAWs into my beloved high-contrast B&W and get much more details when my starting point will be a RAW shot. Below is an example of this (from RAW to high-contrast B&W). I did 1×1 cropping also in-camera.
I have had my Ricoh GRD IV camera now only few hours but I can already say that I really love its close-up capabilities. You can go as close as 1 cm to your subject and this camera will autofocus! Wow. And you can have some decent bokeh with this camera in this kind of a close-ups as can be seen in the shot below. More about other things later.