I want to render an animation in cycles it has a lot of bloom for the neon effects and most of the bloom is just gone in cycles.
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$\begingroup$ 2 ways I can think of are to 1) use a volume (fog) to show the bloom, or 2) Do it in the compositor (try glare node). $\endgroup$– Christopher BennettCommented Jan 22, 2022 at 6:38
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1$\begingroup$ to add to Christopher's comment, you could also try this trick in the following video (it's in french but rather easy to understand, it's about the Layer Weight node): youtu.be/6uMAJayajWE $\endgroup$– moonbootsCommented Jan 22, 2022 at 6:56
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1$\begingroup$ woooow. who made this AMAAAAAAZING video? $\endgroup$– ChrisCommented Jan 22, 2022 at 6:57
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2$\begingroup$ Does this answer your question? Is there a Cycles equivalent to Eevee's Bloom Option? $\endgroup$– pyCod3RCommented Jan 25, 2022 at 6:46
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$\begingroup$ blender.stackexchange.com/questions/15669/… $\endgroup$– pyCod3RCommented Jan 25, 2022 at 6:46
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You can use the glare node to get the same effect, along with some adjustments if you want to modify the strength or give the bloom a uniform color.
You can also use the "greater than" math node to extract the bright parts of an image, blur them, and add them back together. The result however isn't as pretty as the method above.
