Vertical Limits – Charcoal By Anita Murphy | May 24, 2009 | 0 I’ve been rather tied up with a lot of stuff lately but have been working away slowly at this charcoal – a version of Vertical Limits that I did in pastels when we were in Saudi Arabia. Its been nice getting back to the subtlety of tonal values. Posted in Uncategorised and tagged charcoal, paper, Rives, tonal values