I'm really missing a true full screen option in PS.
What I mean is some shortcut (I know about the "F") that displays and image in 100% zoom, centered, no rulers, borders, anything. Pixel to pixel. In case I have a 4k image, press this full screen, it would simply fill every pixel of my 4k screen with an image.
That's it, nothing else.
If such plugin (not action) exists, please let me know. I cannot believe this does not yet exist in Photoshop.