Blue glass caustics less intense
Posted: Wed Feb 21, 2018 2:40 am
While creating a scene in Blender with glass caustics (using BlendLuxCore 2.0alpha5) I noticed that it was difficult to produce intense caustics from blue glass.
I decided to do a test comparing the caustics produced by applying different colours to the same glass object. I've attached the result, as well as the .blend if anyone is interested.
All of the coloured jars have HSV saturation of 100. The top row has HSV value of 100, while the bottom row has HSV value of 50. I've also included a clear glass jar in each row, again with HSV values of 100 and 50.
The test does seem to confirm that blue glass does not produce caustics of the same intensity as other colours. Now I'm wondering why. Is that physically accurate, or is it a limitation of the RGB colour space used for the image file output, or is it perhaps an artifact of the algorithms used to produce the caustics?
(Hey, at least I got an interesting picture out of it )
I decided to do a test comparing the caustics produced by applying different colours to the same glass object. I've attached the result, as well as the .blend if anyone is interested.
All of the coloured jars have HSV saturation of 100. The top row has HSV value of 100, while the bottom row has HSV value of 50. I've also included a clear glass jar in each row, again with HSV values of 100 and 50.
The test does seem to confirm that blue glass does not produce caustics of the same intensity as other colours. Now I'm wondering why. Is that physically accurate, or is it a limitation of the RGB colour space used for the image file output, or is it perhaps an artifact of the algorithms used to produce the caustics?
(Hey, at least I got an interesting picture out of it )