Working with Zooms and Distortion

< Previous | Contents | Manuals Home | Boris FX | Next >

‌Working with Zooms and Distortion

Most zoom lenses have the most distortion at their widest setting. As you zoom in, the distortion disappears, and the lens becomes more linear. Prime lenses may exhibit a small zoom as the focus distance changes. Anamorphic lenses have not only the focus zoom (“focus breathing”), but aspect ratio changes as well.

SynthEyes can solve for animated distortions. See the discussion of solver parameter solving modes in this document, and also discussion of lens breathing in the Anamorphic Shots Guide for more details.

Tip: The “Metadata/Load focus channel from metadata” script can extract any specific metadata item and put it on the display-only “focus” track for the current camera in in the Graph Editor. Similarly, a metadata item can be loaded into the focus channel if you have a YAML (.yml) metadata file, perhaps from a Cooke /I lens, using the “File/Import/Metadata/Import focus channel from YAML” importer. If focal length metadata is present, it can be

helpful in solving or verifying your shot, even though it isn’t likely exact enough for match-moving. It’s a good idea to preserve metadata from the original camera recording!

< Previous | Contents | Manuals Home | Boris FX | Next >