32 BPC blending mode issue

[Nico Jones]

Hi guys,

When I switch to 32 BPC mode in AE and set up some Particular layers, apply some white glow and set the blending mode to screen (as I’d usually do at 8 PBC to get them to sit nicely together), I’m getting weird colour results where the layers overlap. It looks like it’s going ‘inverse’ on the blend; black instead of white.

Any way around this?? it’s not just a particular thing.

Thanks,

Nico

http://www.hiddendoor.tv

[Vishesh Arora]

Nico

Blending modes behave differently in 32-bpc mode as compared with 8-bpc or 16-bpc mode.

Read this:

https://help.adobe.com/en_US/aftereffects/cs/using/WSB48B246A-E34D-4d3f-A0A4-B932FD3F12E6a.html

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra

Blog:
https://digieffects.wordpress.com

Demo Reel(3D):

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[Darby Edelen]

It just has to do with the math being done in the blend mode. Screen is expecting values to be in the 0-1 (black to white) range.

You should use the ‘Add’ blend mode in 32bpc instead.

Darby Edelen