Zoom in viewport without changing the camera Location or focal length? ie zoom (and pan) in a locked camera view in editor.

[vds123321 (s12332122)]

but it is a locked camera.

Scrolling only works as in zooming, in perspective or unlocked camera.

using a 2d scene capturer and oversize it over the screen seems like stupid workaround?

as discussed here:

How can zoom in the player camera and pan the image (camera feed) around without moving the camera location and its target?

[camera] cos all the tutorials i can find on youtube and here are just zoom in features but when they move it, the camera moves too. i want the camera to be just stationary then i can inspect the feed zoomed in. thanks for you help!

but in editor

I wish to be able to zoom in into the camera view.

or is there some key command?