Image 1: 16 samples per pixel, large light source, k=.05 for the tonemap.

Image 2: 64 samples per pixel, large light source, k = .05

Image 3: 128 samples per pixel, large light source, k = .05
Image 4: 512 samples per pixel, large light source, k = .05
Image 5: 1024 samples per pixel, large light source, k = .05
Image 6: 10,000 samples per pixel, large light source, k = .05
