A split focus diopter is an unique way to achieve the illusion of deep focus. The half convex glass attaches in front of the camera's lens to make half the lens nearsighted.
Aired:
10/16/16
| Expires: | Runtime: 4m 26s
You are leaving GBH.org
You are leaving gbh.org and going to a web page that is not owned by GBH. If you are streaming, your experience will be interrupted.