I tried using Wacom's pen tablet "Wacom Intuos" for entry of Wacom which can be purchased from about 10,000 yen which is perfect for introducing Digi picture - GIGAZINE
Wacom Intuos: Creative Pen Tablet | Wacom
Wacom Intuos Creative Stylus Blue CS500PB0 Pressure Sensitive Bluetooth Pen iPad for sale online | eBay