Shadow Rays 1 Sample. No path tracing.	Shadow Rays 1 Sample. No path tracing. Colored glass.	Shadow Rays 128 Samples. No path tracing.
Path Tracing 1 Sample.	Path Tracing 128 Samples. The light is a little strong and I'm not sure why the caustic under the glass sphere is dim.	Shadow Rays and glass. Only 1 sample, but everything is hopefully correct now.
Glass and Shadow Rays. There are 250 samples.	Global photon map.	Includes caustics, but no indirect illumination.
I believe that this is only 16 samples. This image was created after I changed my method for creating random rays.	This image was created using 64 samples.	This image was created using 256 samples.