Adjustment layer in AE?????????

[amirmc]

How can i creat Adjustment layer in AE that it influnces to some underside layers and dosent influence to other underside layers?

[MartinL]

You would probably need to put a mask on the adjustment layer. So it only affects whats inside the mask.

[gordonrobb]

I think (and I stress think), that you create the adjustment layer above the layer you want to adjust, and do something with the transfer mode or something. I'm sure it was on one of the tutorials on videocopilot. But then again I stresss - I think.

[BaryonicMatter]

Or just precompose the layers you need to adjust and place the adjustment layer there.

[gordonrobb]

Ah, I think that's the way I saw it done. Take the layer/layers you want, and precompose them. Then you can do somehting to edit that precompose which takes you to a new timeline, which you can add an adjustment layer to. That was it.

[MartinL]

Or just precompose the layers you need to adjust and place the adjustment layer there.

That works fine as long as the layers you want to affect with a adjustment layer are on top / put after each other. (Damn sorry for my crappy english;)).
But if theres a layer between say layer 1 and 3 that you DONT want to affect. You will still end upp masking / pulling a key for the adjustment layer...

You may correct me if im totally wrong though:o

Cheers

[Edit]
Aaah. I think i misunderstod you dude:)
You mean that you should make say 3-4 different pre-comps and put the same adjustment layer in there?:)

[Jaist]

You cannot do that, you have to precompose all the different set of layers and get effects on those or an adjustment layer inbetween every one of them.
Or else, you can do a copy of your comp, rename it, tint only things that have to be adjusted in white and get the rest tinted in black, then use that as a luma matte for the adjustment (either using the set matte effect or using the trackmatte list) in the main comp.
Then you'll have to replicate all the future changes to the main comp in the copied comp.
You can do that with a long set of expressions (not worth the extra time) or just do that by hand. When you get then to a point when you don't need to change the matte comp you can proxy-render it and use the sequence to get you ae faster.;)

Else, you can apply the same effect on each and every layer and have them follow by expressions the master effect on the adjustment layer (or a more useful null layer, since the adj layer have to get 0% opacity or else the effect will show through everything and double on the chosen layers). You can do that either by hand, hand-wired expressions (not that much of a hassle with the pickwhip) or a script on aenhancers.com (there's a thread here with the link, i don't remember where though, try a search on www.aenhances.com (http://www.aenhancers.com)).