This is RenderMan 21 Documentation you are viewing. The Rmanwiki home page will redirect you to the current documentation.
A "Droste" Lens
(Custom projection plugin by Rob Pieké)
In addition to the typical camera modeling effects, PRMan has the ability to create custom RixProjection plugins. These plugins can be used to characterize camera and lens projections. The distribution includes several built-in plugins, as well. Note that whether or not the depth of field and bokeh settings apply to projection plugins depends on the individual plugin.