How can I add custom image type so the lister will autoformat to display in thumbnail view

Hi,

I know I can set lister display format automatically for folder containing images over 25% percent. When I hover the mouse over the image folder, it shows many files extension which considered image. However, I'd like to add .exr to the list. For example, if the folder contains 2 jpg and 10 exr, it will automatically display in thumbnail view. Hope the explanation makes sense. Is there any way to do that?

Thank you in advance.

Nevermind I found how to add the custom file format for the image in Setting>File format. Considered this topic solved.