by Marshal Rosenthal
Let’s begin with what the challenges of shooting 3D are for the videographer?
The list of challenges for shooting stereoscopic 3D is very long. Traditionally every cinematographer has always attempted to create depth in a scene through lighting, camera placement, camera movement, occlusion and lens selection. Some of those same techniques that work very well in 2D can actually hinder the creative process when shooting stereoscopic 3D. It almost requires ignoring your instincts and a necessity to retrain yourself on how to be creative within the limitations of S3D. Once you have been doing it for a long time you begin to think in 3D and get quicker and quicker at choosing the correct convergence and interaxial separation. You owe it to your whole audience not to cause eyestrain.
[In] reference to the physical scene versus the projected scene, it is easy to memorize a set of rules and a list of scenarios to avoid, but to truly become a skillful stereographer, you need to be able to fit your depth bracket (the depth of the scene) into the parallax budget for your target screen size.
Of course it isn’t as simple as just following an algebraic equation because there needs to be a consistency between shots and a depth script should be respected throughout the project. The challenge is to balance the director’s desire to utilize depth cues whenever possible and the goal of not taking your audience on a roller coaster ride for the whole film.
Let’s talk about your software program, Stereo3D CAT. What’s the problem that it’s designed to solve, and how does it go about doing it?
Stereo3D CAT is a collection of new software tools that can be added to the stereographer’s arsenal to help him save time on set and communicate with the other creative departments on the project.
When combined with the Dashwood 3D chart from DSC Labs, it can help calibrate the stereoscopic camera rig alignment much faster than [was] humanly possible before. It reads special markers on the chart and provides the rig tech with exact measurements (wirelessly via iPad) that aid in the alignment on all 3 axes for each camera. It also helps match color and gamma between the cameras and can flag issues with shutter sync. But camera alignment is just one small aspect of Stereo3D CAT.
Continue the interview at 3DTV.com