Showing posts with label shallow. Show all posts
Showing posts with label shallow. Show all posts

24.7.09

Jim Frazier: Frazier Lens Origin

From American Cinematographer, Seeing is Believing by Christopher Probst (February 1999)

"When I started shooting wildlife documentaries for the BBC," relates Frazier, "I didn't realize that I had immersed myself in a field that was so difficult. Not only was macro and micro photography a difficult area of cinematography, but my subjects were often completely unpredictable, which made it difficult to even keep them in focus! The photographic techniques used on those films often required a lot of special optical equipment, so I spent a lot of time devising equipment and unique apparatus...

...I have found myself lying on the ground for most of my career. I was always looking for unusual angles. But in filming those low angles, I wanted to move the camera away from my subjects. I wasn't content to look down at their world; I really wanted to see that world from their point of view. Toward that end, my first foray into optics literally involved gluing a mirror onto the end of a stick that was taped to a lens. Of course, the problem with that technique was that the insect would then go one way, and I'd pan the other!

To me, optics were absolutely essential to get me where I wanted to go. I literally pulled hundreds of lenses to pieces to get the elements out, and began playing with different combinations. My initial system of lens design consisted of a board with some modeling clay on it that I would stick the various lenses in while looking through with a viewfinder. I spent many months and countless thousands of hours knee-deep in optics.

By trial and error, I eventually came upon the system of optics that ultimately produced the Frazier lens. I'll never forget it the moment I came upon that [optical configuration]. I was doing what I normally did — swapping optics around — and then I suddenly saw what I was looking for. That was it! I literally did somersaults and had to look again. At that point, I knew that I was close to what I had envisioned."

- Jim Frazier, ACS

13.5.09

Jeff Cronenweth: Guiding the Eye w/ Shallow Focus

From American Cinematographer, Anarchy in the U.S.A. by Christopher Probst (November 1999)

"T2.3 was pretty much the stop for the entire movie. Whether we were inside or outside, we always wanted to keep a shallow depth of field to keep the audience focused on what we wanted them to see. I'm very confident about shooting with the Primo lenses wide open, but exposure-wise, shooting at a T2.3 was very comfortable, and I liked what it did to the practicals."

- Jeff Cronenweth, ASC