sample setting for glass?

I wondering if any of you have an opinion about the correct # of samples to use for ray traced glass. The number range is so wide (1-1024) that I am not sure where a good average is…and when you start getting over 100, the render times are so long!

Just thought maybe someone had a rule of thumb, like, decent video quality is 80, or whatever…

thanks for anyone who has time to answer, and thanks Blender for making such a great piece of software!


Depends how blurry the reflections are supposed to be. The more blurry, the more samples you will need to make it look good. Start off with a small number for test renders (e.g. 5). If you’re not happy with the quality, increase it.