On 2024-04-17 08:28 (-4), RATH, CHRISTOPHER A wrote:
>>
> This is a ways from being done, but I wanted to share the updated image
> with the bubbles fixed.  The balloon texture is still not quite right,
> even when I render with radiosity (which this version does not).

I doubt radiosity makes any difference here.  I would give Alain's
suggestion of blurred reflection a try.  If you haven't seen it yet, the
technique is at:

https://wiki.povray.org/content/Knowledgebase:Language_Questions_and_Tips#Topic_13

To avoid having this technique stall and take forever, use Alain's
modification:

https://news.povray.org/49b9809b%241%40news.povray.org

And I would cut the reflection in half or even lower; and if you're
using finish-level Fresnel, remember to use the reduced reflection as
its argument:

finish
{ fresnel 0.5
  reflection { 0.5 fresnel }
  conserve_energy
  ...
}

The reflection of the water highlights on the right edge of the balloon
looks suspiciously metallic.  Is this not a rubber balloon?

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