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I'm trying to make a model of a tree.

The leaves are a picture with an alpha channel (tif). As a (material) surface I used the Principled BSDF. Here I tried to change the alpha values (for example, 50%). Unfortunately nothing happens.

Also when I connect the alpha part of the tif, nothing happens.

Scene

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in the material properties, choose the transparency's behavior :

enter image description here

"opaque" means no transparency, that's why you don't have any changes in your viewport even if the shader you have configured is ok.

The "display settings" of the material is in the material panel, while the material itself is in the node editor.

There are 3 alpha modes :

"clip" is a straight "yes/no" mask, use it for very sharp mask like, well, like your leaves.

"blend" treats alpha mask with all it's shades of grey (usually more than 50, hahaha :-X)

"hashed" also treats shades of grey but using a smart "yes/no" pixels distribution, the result is average good and maybe lightest to calculate (and kind of super-stylish, why not !)

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  • $\begingroup$ Probably worth mentioning what Blend mode to set :). They can be confusing for new users. $\endgroup$ – Jachym Michal Mar 16 at 10:46
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I always use ** Import Image As Planes**.

The image comes with the proper nodes.

I'm using the 2.79 version but I think the nodes should be similar.

enter image description here

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