I am trying my hand at digital drawing again. This time I am customising the standard rounded brush and using Transfer in the Photoshop Brush options. This seems to be linked in with the pen pressure so that you get a lower opacity line with less pressure that leads into a more solid line. This in turn gives more natural feel to the line work, unlike my experience with the harder looking and feeling brush tip without Transfer applied. The pen has a pencil brush effect, the Nirvana of all drawing implements sort by mankind.