Blue Glass Material help

[MarsYellow]

Note the last line
""2. Corona Volume Material

Corona Volume Material doesn't require any special actions to enable scattering effects as it is designed solely for them. To see the effect of light absorption and scattering, simply change absorption distance value to other than 0 and scattering color to other than pure black. You can also make your material glow by changing "emission distance" to other than 0.This material should only be used for objects with no defined surface (smoke, clouds) and for volumetric fog. ""

https://coronarenderer.freshdesk.com/support/solutions/articles/5000534910-how-to-use-subsurface-scattering-volumetric-absorption-and-scattering-

[MarsYellow]

Ok wait looks like i have confused the volume setting in normal corona Material with the corona volume material that doesn't actually have any surface properties .But you should read the article any ways (if you haven't already ) it is a really good one . :)

[maru]

Yes, the Corona Volume mtl has no support for surface. It's only the volumetric effects.

Absorption and scattering can be also enabled for the standard Corona Mtl, and they work exactly the same way, but additionally you can enable effects on the surface, such as reflections, diffuse, ...

Absorption works in the volume only, but you can use it with surface effects too.

[MarsYellow]

Thanks for clearing that up
So why the two materials ,I mean wasn't it easier to put the light emission in the normal material and get rid of the volume material ? are there any advantages of using the volume material ?

[maru]

Thanks for clearing that up
So why the two materials ,I mean wasn't it easier to put the light emission in the normal material and get rid of the volume material ? are there any advantages of using the volume material ?

It's just faster and easier to set up for objects like clouds and for global volume.

[MarsYellow]

ok that makes sense