Calibrating Distorted Lenses in SynthEyes
Russ Andersson demonstrates calibrating a conventional lens with significant distortion using SynthEyes. He emphasizes using a single sheet for calibration dots to ensure accuracy. Starting with tracker creation, he locks trackers and proceeds to the lens calibration. The tutorial covers selecting a fixed spacing grid, a linear lens model with quartic distortion, and configuring lens center and field of view settings. Various output options are explored, including delivering an undistorted image, re-aiming for better alignment, and workflows for compositing effects with the original distorted image. Andersson explains using undistortion and image maps for applying calibrations in other software like Nuke or After Effects. Detailed information can be found in the camera calibration manual.