They're called Modes in the English version of AE. it's a similar function but the math is different so they're not called blending.You can toggle the column for them on and off in the timeline or they can be accessed under the Layer menu where they are called Blending Modes.
Blending modes are Add, Multiply, Screen etc. Or?
This is not what I am after. I need to "tell" the layer that everything green (or any color) or a certain luminance shall shine through the layer.
> In Photoshop there are blending modes, I haven't found anything similar in AE. I use AE CS5.<
> Blending modes are Add, Multiply, Screen etc. Or?
> This is not what I am after.
Asked for blending modes, did you. Blending modes to you I gave. Tell me after that's not what you want. A translation issue this is?
If you create an alpha from the green spots, you can use a channel operation to move the alpha information from one layer to another and the dots shall shine through.
I don't think you can do what you want without multiple layers, but this might be a start:
If you think about using AE layers not as you normally would, it just might work.
sorry about that, I did not really know what to ask for, blending or not blending.
The link does not work..
I solved it by duplicating the layer with green spots, adding a chroma key affect, hiding the layer and then us it as an alpha track matte. More complicated than needed I thought, but it works, and that what's count.
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The blend modes in AE are just like the blending modes in Photoshop. I think you're looking for the Blend If layer style.
Or you might be looking for this:
The first can be brought into After Effects by importing a PSD as a composition with the Blending Options set in layer styles. It will show up under Layer Styles and can be copied and pasted to other layers. Unfortunately, you cannot make the blend adjustments in AE, you can only turn the effect on or off. The API's just don't exist that allow that to happen.
It looks like this in AE:
The second, Preserve underlying transparency is just a check box in the timeline. I use this feature all the time. You'll find the box between the blending modes and the track matte. There's a T at the head of the column. In a strange twist, this feature does not come into the timeline when you import a PSD as a composition, it must be turned on manually.
Hope this helps. I actually use both all the time.
Thanks a lot, Rick!
I was looking for this, since I use it in Photoshop.
But I have to use my chroma key solution now. Wonder why I can't do this in AE equally easy as in Photoshop.
The API isn't available in the developers kit to do this. Maybe it will get there. I use both the clipping mask (preserve underlying transparency in AE) and the blend if options in photoshop a lot. Many times I'll just set up the blend option in Photoshop, import a PSD as a comp, then copy the layer style and paste it to layers in another AE comp. Many times this works just fine.