How to Create Natural Light Diffusion Through Glass in D5 Render?

Hello.
I’m a designer working at an exhibition design company in South Korea.

In Korea, we often build exhibition booths using a modular system called “blocks.” These blocks are assembled like LEGO pieces to construct the booth. Sometimes, we install fluorescent lights inside these blocks and cover them with translucent graphics and glass, which creates an effect like the one shown in the photo.

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Before we actually build the booth, we need to present a realistic render to our clients. To achieve more natural lighting effects, I have a few questions.

So far, despite trying various approaches, we haven’t been able to get realistic light transmission. Instead, we’ve been simulating the light by adding a separate glowing frame inside the block to fake the effect, as shown in the image below.

Is there anyone who knows how to achieve more natural light diffusion? For example, if we place the light source in the center of the block, the edges should appear slightly darker — are there techniques in D5 Render to achieve that effect?



Also, when increasing the Emissive value, the color becomes washed out and turns white, even though I’ve set a specific color. I would like to keep a vivid, saturated color — like a neon flex light — and only increase the brightness. Is there any way to maintain the original color while making the material brighter?

Thank you in advance!

*I used a translator to write this post, so there may be some awkward expressions. Thank you for your patience.

Hi, I read your problem, and I tell you this, in the video of the D5 2.8 shows a type of translucent glass that is illuminated behind, now you place it:

You can download this file from the Express scenes, but being curious of nature I made some tests with the material you exposed but otherwise as you did, because in its simplicity it was enough to give more color to the material, in short, darker than that sharpness.
Then with the light shot above it was normal that it lightened, I tried with the material no transparent but normal, because it did not emit the light, so it made it emissive and I gave it color and mirror it also increasing the metal part.

Sorry for English I use the translator too