Colourful Glasses - Lighting

This was done in Mental Ray.

This is a downloaded scene.

I textured and did lighting for it.

I used Dielectric Material (A Mental Ray shader).

I did Caustics for this.

I used high ammount of GI (Global Illumination).

and FG (Final Gather).

For the green glass I put a point light in the bottom of the glass to get the effect.

For the red glass I put a point light at the rim of the glass to get the effect.

For the blue and yelllow glass I put a point light at the top of the glasses to get the effect.

It took 40 minutes to render.