This image was generated using a renderer developed during my PhD using the bidirectional path tracing algorithm.
Here I simulate the interactions of light coming from a diffuse area light source, scattering through a glass model of the Stanford Bunny which has been modified to have both inner and outer walls, and filled with a simulated wine like liquid. In the foreground, within the shadow of the bunny, we can see caustic illumination patterns where light has been tinted and focused as it undergoes refraction as it passes through the glass and liquid mediums. In the background of the image the grid pattern on the floor becomes blurred and out of focus due to the physical simulation of light interactions with a camera aperture and lens elements. Similarly, the aperture simulation can be seen in the form of small hexagonal specular highlights on the bunnies ears which occur due to the aperture being modeled as a six sided polygon.