-
Turbulence FD alpha problems
Hello everyone.
I earlier downloaded the learning edition of Turbulence FD and have made a small fire animation that suits my purposes. It looks really bright in Cinema 4d’s picture viewer. But when I render it with an alpha, the alpha comes out really dark. In After Effects, the resulting image is very dark and colourless.
Playing around with all this, I got some really strange anomalies. I can get it to look better by rendering out 32 bit, and then setting After Effects to 32-bit, linear workflow. It still looks dark and colourless, but if I drop a black solid behind it in AE, it looks OK. There is another problem in that, if I composite another layer under it, the composite looks as though it is on top.
I find it all very strange. I think I may post on the AE forum as well in case the solution is there, rather than out of Cinema.
Many thanks for your ideas.
John
I’ve investigated this a bit more and it appears that my problems were due to my lack of experience working with linear colour in AE and the way that Turbulence FD creates its renders that have alpha channels. It seems that the render TFD produces is both extremely bright and extremely transparent – something that is only reproduceable in AE in 32-bit, linear colour. Then, in AE, when you comp it in front of other bright things, you get a white result; This is because, although the fire looks orange, its high transparency and brightness allows the lower layers combine with it to produce a combined colour above 100%.
It’s more usual to render fire on black, without an alpha, and then use screen or add mode in AE. This this gives a more straight-forward result. -
0 Replies
Sorry, there were no replies found.
Reply to this Discussion! Login or Sign Up