I've been trying for a while now to get the aspect ratio & other bokeh settings to change with Renderman 23.2 and Houdini 18.0.391. Nothing I've done seems to get the bokeh to be anything but a default circular shape.
I thought it could be something to do with needing to use a lens shader & link to pxrcamera inside the ‘risnet’ node. It doesn't make a difference though, and nor is it implied by the RfH docs on the bokeh: https://rmanwiki.pixar.com/display/RFH23/Bokeh [rmanwiki.pixar.com]
Plus - it works fine in Maya out of the box. Not sure what to glean from this apart from it's probably something like a hidden checkbox within Houdini… Images attached.
Would be very greatful if a solution to this is out there.