How can I "convert" a blender model into a 2d drawing? As one can see, behind the "Koro" text, there is the outline of the lama.

How is this effect created? Are there any options in the compositor to do so?

How can I "convert" a blender model into a 2d logo?

Many thanks ;)

.blend file: https://mega.co.nz/#F!9QMGCTxL!PIc910mkaEhot_dlYFeQQg
Another option is to use the Material Override option in Properties &gt; Renderlayers to override all the materials with a flat gray shadeless material.
For example:

Create a shadeless gray material:


Use it as the renderlayer override:



Result: