Glass Transparency Seems Dark

Question

I rendered this glass material, however, the transparency of the glass is darker than what I was looking for.

I tried to increase the light bounce number but it didn't work.

How can I achieve glass material that looks like this?

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EDIT

The engine is in Cycles,here's my blender file, base color is pure white but it still appears grainy.

file

Answer 1

In the Principled BSDF shader, the default Base Color is a very light gray. To make sure the surface absorbs no light, set the Base Color to pure white.

(If you are using the Glass BSDF shader, make sure its color is white as well)

I'm assuming you have a simple 1-node shader setup. If you have something more complex, it is possible that the other materials are affecting the transparency color as well. Make sure you aren't mixing the material with a darker material in a mix node or similar.

Also check that there is no volume absorption shader set on the material. This can cause it to appear darker as well.

Answer 2

To achieve "Glass material like this" I see several steps (Cycles only) :

1. As Reinis mentioned, crank the Base color to completely white
2. Add small Roughness, like 0.2-0.3
3. Add a small bevel to highlight the edges
4. Change IOR to 1.2 maybe
5. For correct shadows we'll have to wait for better caustics in Blender

The greater the IOR (more than 1) the darker the glass, which is physically correct behavior, but may not be the desired effect ;)

If that doesn't help - Youtube has great videos on Blender Architectural Glass.

Good luck with your scene!