A png with transparency is reveal by an another transparency object

I working on a set up which is composed from 1 ground opaque, 4 acrylic glass, and on the top of those: one png file with photography in the image texture mixing with transparency.

Problem is that the object with the png material is reveal into the 4 acrylic glass material.

I first tried to uncheck in the property of the png: transparency , shadow… but this is not the problem and I need the shadow…

Someone have an idea about how to manage this?
I’m thinking at something that I’m not very good at, like different render pass…But I don’t quite sure it can do the trick

Great thanks for any help.


annette masterman.blend (1.96 MB)

You need to raise your maximum transparent bounces.

Thank you
It resolves the problem !!