In some tutorial videos where they composite the scene using various images, effects, shading etc.(in separate layers). And at the end, they would try to apply
Camera Raw Filter. But they would do it to a merged version, means all layers would be merged into a smart object or a flattened image.
How can I merge all my layers like that? Here's a screenshot of what am talking about: https://prnt.sc/w3g7xf
Any ideas? Thanks.