The image shows the middle of a glass of wine. The stem of the glass reflects the wine and I have tried everything I know to simulate the reflection. Transparency maps do not work and so far niether had modeling or the creation of new groups in the mesh. Any idea how to achieve the reflection of the wine on the stem of the glass very welcome.

After tonight I will not be able to view replies until Monday.

Thank you

Its refraction not reflection. the glass is bending the light from the wine. You'll need geometry for the glass and wine as refraction is caused by light passing from one medium to another.

Hello ironsoul. I tried refraction wit RT=4. It helped a liitle but not enough to be realistic

     The wine mesh needs to be slightly inset (allow a wee gap) from the wall surface -especially nearer the bottom- of the glass to avoid a Firefly artefact.  For the glass, the mesh needs to have thickness;  i.e., not a single layer of polys, but have both an outside and an inside surface.  Try using using double the index of refraction for glass, because the refract node (incorrectly) bends light the same direction when it exits as it did when it entered.  So, try about 3 rather than ~1.5 for the index of refraction.

     I've never tried to get the effect you want, so this just a hypothesis.

Also.. which Poser version? Refraction is somewhat borked (still, after SR2) in PP2014

Like the phrase "borked", need to get it in a few emails to day.

luckybears, do you have a screen shot of the glass mesh?

Sure BB has covered this before but can't find the posting.

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I did some investigation. changing the refract index to 3 from the default 1.5 on exnem's glas mat didnt change anything. it's probably vary dependant on the mesh.

Hi luckybears

Had a go with this but without much success, at the moment I think the problem is with how the light is coming from the wine because if I change the wine material to ambient the banding effect starts to appear. 

Have sanity checked the mesh I'm using in Carrara and Maxwell and both show the banding

Attached Link: Crystal ball thread

Ok, found my mistake was using the "crystal" material from the standard Poser material library. The forum article I was thinking of was for a crystal ball but there are some interesting comments from BB about IOR. Using this glass material I had more wine colour extending down the stem but could not reproduce the band effect.  Thought this was an issue to do with mesh shape but as said above I can get the effect in other render engines with the same mesh so don't know now.

If this particular, exact, interior image that you seek is the result of:

* Refraction of

* a total internal reflection of

* anything else

or

* An internal refraction of

• anything else

You cannot reproduce it with Poser. The math is straightforward, has been known for quite a while, and I have brought it up with the Poser team, yet we continue to have Poser that is ignorant of basic physics of light.

Quote - I did some investigation. changing the refract index to 3 from the default 1.5 on exnem's glas mat didnt change anything. it's probably vary dependant on the mesh.

You should have more carefully read what I said in the crystal ball thread. I quote myself:

Quote - For a sphere we can get the fisheye using IOR of 3, which compensates for the incorrect implementation in Poser. (Note this is only for a sphere - it does not generalize to other shapes.)

Not only is it probably very dependent on the mesh, it is absolutely not going to work on any other mesh.

Thank you for the ideas and suggestions. I tried faking it with Tx & TM maps but the results were a mess. I built another DS mesh and no matter the settings I could not get it. It looks like we are going to have to wait until BB's pressure on SM takes effect :)

TY again