Question

Is it possible to scan a geological slide in polarized light and create a Z-Stack and composite EDF image?

If so, is there any advantage in doing so?

Answer

Yes. This is certainly possible. An EDF Software License is required to create the EDF composite image from the Z-Stack.

It's hard to say whether there is any advantage in creating Z-Stacks of geological thin sections.

The image to the right compares the output of a single-layer scan using predictive focus (the image on the left) with a 7-layer Z-stack EDF composite image (on the right). If you look closely, you can see some additional detail in the EDF image (the right side) compared with the single-layer scan (the left side).

It is up to the user to determine if this additional scanning and processing is worth the modest improvement to the image.