Tim Jenison is the founder of a computer company called NewTek. In his spare time, Jenison tinkers with various inventions he's come up with and indulges in an eclectic array of hobbies. One of these is art, specifically the artwork of Vermeer.
Johannes Vermeer (1632-1675) was a Dutch painter who was renowned for the almost photo-like quality of his work, particularly his amazing ability to paint light. This can be seen in all of his paintings, including two of his most famous ones- The Girl With A Pearl Earring, and The Geographer:
In the end, Tim Jenison's efforts result in a very respectable reproduction of The Music Lesson and this seems further evidence that Vermeer could have- and perhaps probably did- use a method similar to this when he was painting. Ultimately, it is left to the viewer to decide if they think Vermeer used a camera obscura, and what, if anything, this says about his artwork if he did.