Highlight Multipass

[Mylenium]

Specular highlights are supposed to be used with blendmodes (like most other shading passes) and thus have no Alpha. you can however easily create one by unmultiplying based on the brightness. In After Effects this can be done with a series of plugins. Search the AE forum (or the respective other forums, if you use Fusion ofr combustion*).

Mylenium

[Pour Myl

[Jon Herron]

Thanks Mylenium,

I kinda figured that. I’ve been doing ” Post > Multi-Pass” on an animation I have with highlights. Instead of trying to get the highlights perfects during the render i was just gonna mask and tweak in AE. I’ve used the Knoll Un-Mult and even Add Mode on the Highlight Animation Pass and it works great singling out the highlights due to their luminance value. But of course the the highlights are still rendered to the “main” animation quicktime. Would the best way to comp the post effects be to render an clean “main” animation with no effects and then comp the highlights from a multi pass render on to that one??

thanks man
jon

[Mylenium]

No. When you render Multipass, you have to render all passes you require. In your case you’d simply combine the diffuse and specular passes for instance (and all other passes you need of course). Unfortunately you can’t have one without the other.

Mylenium

[Pour Myl

[Adam Trachtenberg]

In my opinion you’re better off using a highlight filter like Starglow in AE rather than doing it Cinema.