Cycles Render Glass Volume dark

Rendering
1

Hi Nathan,

Can’t seem to find the setting in the advanced setting which would allow the Glass volume to lighten up the glass which IOR is set to 1.52…
Any hint ?

image
image1372×681 60.8 KB

Many thanks,
Jean

2

Hi Jean,

Can you post the 3dm?

3

Sure Brian, here it is.
Glasses.3dm (880.8 KB)
And here is what I obtain in KeyShot with the same model.

untitled.356
untitled.3561000×1000 470 KB

Thanks,
Jean

4

Raise the number of Glossy samples in the advanced options of the Rendering panel. This is 4 by default but 16 does a better job on this model.

image
image1350×740 103 KB

And then if you want to go further use an image based environment, a material for the ground plane and increase the samples.
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image1270×786 105 KB

2 Likes
5

Thanks Brian,
I did increase the Glossy samples as per your first screenshot. This did not appear to improve.

image
image1616×618 123 KB

Did I miss some other setting ? Just in case, here is my system file.Rhino System file.txt (2.7 KB)

1 Like
6

After changing those settings you have to toggle the Raytraced viewport. Change it to say Wireframe, then back to Raytraced.

1 Like