Movie Render Preview issue

When rendering using the sequencer - the Movie Render Preview Window does not show in the preview the correct aperture of my camera I am using inside the Sequencer.
The final images are rendering fine - but it’s just a bit confusing when I can’t see the correct lens inside of the movie preview render window.

How to fix that?

Thanks a lot for any little hint!

Nothing? Isn’t there an option to set the render-preview to 100%?
Or something like that?

I could not find anything in the unreal docs or any other posts.

thanks for any little help!