transparency with lens flare

[Alperen T. ayhan]

apply lens flare to a black solid, and then use blending mode; screen.. that’s all..

Alperen T. AYHAN
http://www.sinamasal.com
Always cinema…

[Chris Burns]

I tried that but it remains black.

[Roland R. kahlenberg]

You apply the Screen BLending Mode to the nested layer. If youapplied it to the pre-comp then either remove it and apply it on the nested layer OR leave it as it is and hit the Collapse Transformations box for the nested layer to ahve the Blending Modes come through into the nested comp.

HTH
RoRK

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[Chris Burns]

So don’t apply the blending mode to the precomp until I bring it into the main comp? I was going to render the comp and bring it in that way or possibly bring it right into premiere that’s why I was trying to get the transparency before rendering this element. I’ll try bringing it into the main comp and clicking collapse transformations. Is it possible to render it with an alpha though?

[Roland R. kahlenberg]

[Chris Burns] “So don’t apply the blending mode to the precomp until I bring it into the main comp?”

Both ways can work. I think I provided both methods in the previous post.

[Chris Burns] “Is it possible to render it with an alpha though?”

Yes.But take note that Premiere has the same Lens FlareFX. To create an alpha, look into using the Luminance effect. You’ll then want to apply levels, both before and after the Luminance effect. The before is to crunch the blacks and the after is to enhance the bright areas.

HTH
RoRK

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[Chris Burns]

After bringing in the comp with the object and the lens flare to the main comp, I changed the blending mode and turned on collapse transformations and I still have no transparency. If I turn the lens flare layer off I have transparency. There must be something I’m missing. I have tint and curves applied to the lens flare layer but that should matter.

[Chris Burns]

Ronald suggested it. So I tried it. Just a run down of what I’ve got Dave. I have a object that I have applied a lens flare to and have animated the lens flare around the object. Once I apply the lens flare I lose my transparency. I have changed the blending mode of the lens flare layer (black solid w/ lens flare applied) to screen and have also tried various other blending modes but no luck. If I turn off the lens flare layer there is transparency. Any suggestions? I’d like to render this element out to use in another project but I need the full transparency.

Thanks

[Roland R. kahlenberg]

Chris, let’s try this again but with a nearly clean slate –

1) you’ve got a layer with an object
2) a second layer is a Black Solid (0,0,0 RGB values) with Lens Flare appled
3) you’ve done some keyframing

Let’S leave these as they are now, IOW, do not apply the Screen OR Add Blending Mode – both knock out blacks within the layer it is applied to. However, Blending Modes do not create an Alpha Channel, it just specifies how certain RGB values interact with layers stacked below.

4) Nest this comp into your ‘final comp’ and apply the Screen or Add Blending Mode.

Does this work?

RoRK

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[Chris Burns]

No such luck… that’s how I have it set up right now. Precomp with several different shading layers, particular etc., few different bending modes on some layers including add for the lens flare layer, (normal hides the layers beneath the lens flare layer) brought into main comp and blending mode set to screen. Still a black background in the main comp. I go back into the pre comp and shut off the lens flare layer and then I have transparency in the main comp.

Thanks

[Roland R. kahlenberg]

That’s fine. Now let’s step back to the precomp. Apply the Blending Mode to the Lens FLare layer. Then nest this comp into your final comp. In the ‘final comp’, apply Collapse Transformation to the nested comp.

Does this now work?

If it doesn’t then something’s amiss. And I suggest that you key out the Lens Flare layer. If you do this, Levels is important, especially Input White and Output Black settings.

Good Luck
RoRK

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