PhotoView 360: When is interference a good thing?

When you have layers of transparent materials in your model (like a glass containing water), you get a better result when rendering with PhotoView 360 if the “liquid” body interferes by a small amount with the “glass” body.

Take a look at two renderings showing both results. Fig. 1 shows the real-life condition, where we have just “contact” between glass and water, while fig. 2 depicts the case where there is a small “interference” between the two. Which one do you like more?

As a side note, you should never leave a gap between the two transparent bodies.

Fig. 1 - Contact between glass and water

Fig. 2 - Small interference between the glass and water bodies