Render only shadows without object

Hi everybody,

how can I render just black shadows in raytracing mode on a white plane (or transparent), hiding the related object?

Thanks for any help!


I attach an image example

Currently not possible.

Render passes not possible in Rhino - clown, shadow, depth etc?

Check in Rendering panel when Rhino Render is selected. Switch from automatic channel selection to manual. A couple of passes are possible, but currently not all that Cycles is capable of.

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Thank you - I’ve tried Render channels / Custom (RGBA, Distance, Normals, Albedo) but for now nothing relevant happens

You can choose what channel to look at in the render window that pops up when using the _Render command.