them, 90% of the people who see my paintings think they're photographs. >> it's meant as a compliment, of course, but casson says actual photographs lack the texture and emotion of his paintings. >> until it's the end of your 100 hours you spent with this person painting them, you've talked with them throughout the process, you know who they are, you've captured the nuances of their expression and their emotion. they're pretty much -- they're not a mile away, and they're not blurry. they're right next to you and you're shaking their hand. so it's really understanding who they are. >> and skrchlt casson is now taking that understanding straight to an iconic piece of 21st century technology, the ipad. helping pioneer a new trend in the art world, casson every now and then trades in his paint brush for just his finger. using an application called brushes to take his work from the canvas to the computer screen. >> i couldn't imagine having this ten years ago. it's like a portable color sketch book.