Backplate Image conflicts with the Environment

[geniusloci]

Hallo, Keyshot community.

I m rendering a Protein model (Ubiquitin) with membrane (liquid).

When i use the Backplate image the edges of the liquid goes dark, and when use the environment as background it goes away.

But I need to use the Backplate Image in this Rendering. How can I avoid the dark areas in the liquid?

I tried the global illumination, bumping up the ray bounces and using self shadows. non of these worked.

I would be very happy if any of you know anything about that.

Thank you very much in advance.
best regards

[richardfunnell]

The easiest solution is to render it with the environment visible, but with transparency enabled so you can add the backplate in post. It's a second step but the most straightforward way to get the results you're looking for.