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Lens Models
The following lens models are currently supported, along with a brief discussion of their use. Detailed information on the coefficients can be found in the Advanced Lens Controls reference section.
Classic. SynthEyes 2210 and earlier’s original lens model, as featured in most current tutorials and documentation. Fast and good at modeling symmetric distortion, but lacks the advanced parameter solving modes and its cubic term cannot be directly exported to other packages; in most cases new work ought start with Std. Radial 4 th-order model.
Radial+Squash. An updated version based on the classic model, but containing the advanced parameter solving modes.
Std. Radial 4th-order . A Brown-Conrady model suited for radially symmetric non- anamorphic lenses; it models lens misalignments. Also available as a match- moving-friendly Radial 4 th-order version.
Std. Anamorphic 6th-order . An industry-standard model for anamorphic lenses with 23 parameters, including horizontal and vertical scaling and lens mount misalignment rotation. Your go-to for significant anamorphic shots, but requires
plenty of trackers. Also available as a match-moving-friendly Anamorphic 6 th- order version.
Std. Anamorphic, Merged 6th -order. A simplified version of the Std Anamorphic 6 th- order model; it has the same coefficients for both X and Y axes. You might use this for simpler shots when fewer trackers are available. Also available as a match-moving-friendly Anamorphic, Merged 6 th-order version.
Fisheye: in Equidistant, Equisolid, Orthographic, and Stereographic versions. These handle the four basic fisheye lens types, including 2 nd, 4th, 6th , and 8th-order distortion. Typically, start with Equisolid, with enough distortion terms enabled it’s not clear there’s much difference between the types in practice. Fisheye shots require special treatment of field of view (always Known, at the maximum value desired) and focal length (decoupled from the field of view, in order to try to match the lens’s rated focal distance). These are all in the compositing-friendly direction; the Std. isn’t called out explicitly.
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