Translucent Material comparison

The Twilight Render Team shares tips, ideas, helpful hints, and more on using Twilight Render
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Fletch
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Translucent Material comparison

Post by Fletch » Mon Aug 14, 2017 9:24 am

This is a comparison of the Template Translucent and similar materials, in this model used as a cover on a pergola.
This shade canvas model on top of the pergola is a single rectangular face 1 inch above the wood of the pergola model.
These were rendered in Easy 04. Medium render setting.
The face was painted with 90% grey color and then the Twilight Render material template was applied.

NOTE: RIGHT-CLICK IMAGE AND CHOOSE "OPEN IMAGE IN NEW TAB" TO SEE IN FULL RESOLUTION.
Translucent-Materials-Comparison.jpg
Translucent-Materials-Comparison.jpg (1.06 MiB) Viewed 3478 times

posodrac
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Re: Translucent Material comparison

Post by posodrac » Tue Aug 15, 2017 10:29 pm

Thx Fletch, This help a lot. Does this material templates give similar results with thickness ?
This will look good in my "curriculum vitae": "Heterodox truck driver at TNT/FedEx"

Fletch
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Re: Translucent Material comparison

Post by Fletch » Wed Aug 16, 2017 11:14 am

No, for modeled thickness, results will vary.

Use the Template>SSS for thick models, the SSS template can look fantastic but render times are much longer and the results are best with Easy 09 or 10 render setting.

Here's an example of a 2mm thick glass lamp bowl pendant that comes in the Twilight Light Components for V2.
Here is the default material and how it renders.
LampGlass-Thick-Default.jpg
LampGlass-Thick-Default.jpg (78.21 KiB) Viewed 3328 times
Here is the Translucent>Thin Curtain Material template applied to the lamp glass material instead. The difference is that we have CHANGED THE "Translucence" variable to be 100 changing from the default template value for Thin Curtain of 30.
LampGlass-Thick-LampGlass-ThinCurtainTranslucence100.jpg
LampGlass-Thick-LampGlass-ThinCurtainTranslucence100.jpg (61.34 KiB) Viewed 3328 times
It renders quickly, and looks good.

Keep in mind that in this large ceiling bowl pendant lamp there are 4 point light sources each at 1750 lumens output. See screenshot for settings. (RIGHT-CLICK>OPEN IN NEW TAB to see FULL resolution image)
ScreenshotSettings.jpg
ScreenshotSettings.jpg (326.64 KiB) Viewed 3328 times

Fletch
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Re: Translucent Material comparison

Post by Fletch » Wed Aug 16, 2017 12:10 pm

2mm thick glass lamp with Template > Frosted Glass > Light
The advantage with this one is that the point light object for Twilight Render looks like an actual light bulb. ;)
Attachments
LampGlass-Thick-LampGlass-FrostedGlassLight.jpg
LampGlass-Thick-LampGlass-FrostedGlassLight.jpg (54.99 KiB) Viewed 3324 times

Fletch
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Re: Translucent Material comparison

Post by Fletch » Wed Aug 16, 2017 12:15 pm

When to use "Lamp Glass" template?
The Lamp Glass looks like a nice "frosted glass" material when there is NO THICKNESS to the model.
So, use it with a single face model of a lamp shade.
If you have a model with a thickness, then just hide the innermost face of the lamp shade, so that the exterior face is the only one that will render.
Attachments
LampGlass-SingleFace.jpg
LampGlass-SingleFace.jpg (53.1 KiB) Viewed 3323 times

Fletch
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Re: Translucent Material comparison

Post by Fletch » Wed Aug 16, 2017 12:22 pm

When to use "Frosted Glass > Heavy" template?
The Frosted Glass Heavy looks like a nice "frosted glass" material when there is NO THICKNESS to the model.
So, use it with a single face model of a lamp shade.
If you have a model with a thickness, then just hide the innermost face of the lamp shade, so that the exterior face is the only one that will render.
LampGlass-SingleFace-TemplateFrostedGlassHeavy.jpg
LampGlass-SingleFace-TemplateFrostedGlassHeavy.jpg (52.62 KiB) Viewed 3320 times
When to use "Frosted Glass > Plexiglass" template?
The Plexiglass looks good when there is NO THICKNESS to the model.
So, use it with a single face model of a lamp shade. Plexiglass template obscures the light objects more completely than "Heavy".
If you have a model with a thickness, then just hide the innermost face of the lamp shade, so that the exterior face is the only one that will render.
LampGlass-SingleFace-TemplateFrostedGlassPlexiglass.jpg
LampGlass-SingleFace-TemplateFrostedGlassPlexiglass.jpg (52.86 KiB) Viewed 3320 times

Fletch
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Re: Translucent Material comparison

Post by Fletch » Wed Aug 16, 2017 1:55 pm

Here's a table lamp downloaded from the 3D warehouse for the purpose of example.
Download for yourself from 3D Warehouse "Rosie's Table Lamp"
Attachments
Lamp-Compare.jpg
Lamp-Compare.jpg (225.3 KiB) Viewed 3311 times

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