Linestudy1-800

I’m just experimenting with line weight. Brushes has 3 different brushes and I wanted to compare the smallest setting of each brush to see if they looked different. I think brush #2 gives a slightly finer line.
 
When you save the large version as a tiff in Brushes Viewer, you lose some contrast. So, I increased the contrast a bit in Photoshop using Curves.