Hey Y'all

in Ae, I am using a 8bit effect on a 16bit effect project (for example - motion tile),  I am not getting a visual penalty for doing that and everything looks exactly the same. I have tested it though makig a gradient and pushing the levels to it to get a banding which 16 bpc project removes. nomatter where I put the motion tile effect, I am not getting a 8bpc result. so how is using an 8bit effect on a 16bit effect actually make a difference? can anyone show an example?

Thanks