Many photographers, illustrators, artists, and graphic designers often use drawing tablets for digital illustration or photo retouching jobs because it is more convenient and enjoyable than just using a mouse. By using a drawing tablet and computer program you can select from all sorts of different tools and settings. Choose from endless brushes including watercolour, calligraphy and even chalk. Then there are the limitless colour selections on offer. The freedom to not only draw with any pen, whether it's a fine fountain pen or a thick marker, but also edit your designs however...