On this ink sketch I did minimal digital manipulation. All I did was optimizing the image in Pixelmator. This means some of the gray values of the Indian ink are still in there.
The sketch was made using a number 4 saber pencil brush and Indian ink over a pencil sketch. Aside from normal inking, I also used a dry brush technique for the mid-tones. To complete it I needed 60 minutes, including the penciling on some old and yellowish paper in a bound book with empty pages I had still lying around.
That is all.
So much to do, so little time 