Pointillism. A form of detailed painting which is made by thousands and thousands of tiny dots. It's fallen out of favor in the recent years due to the massive amount of time and energy it consumes. A friend of mine worked on one for half her life and found that when it was finished she disliked it with a passion. Not a good thing.
I've never attempted it. Not long on patience and definitely short of dedication, I turned to watercolor because it often paints itself. A little water, a little pigment, a piece of paper and a few turns of the paper often manages to make an underpainting to be finished with a few broad strokes and a bit of negative painting.
The image is one of my first watercolors, an underwater scene, which I opened in Adobe Photoshop Elements to invert its color and then used the Pointillize filter. It shows a bit of the action required by this form of painting.
And that was the end of my patience.