In Standard view, Okular supports zooming with Ctrl-+/- and with Ctrl-Mousewheel. Unfortunately not in Presentation view. This function would be very nice in case the presentation is done on a "twin view" connected monitor having a lower resolution than the primary screen. This feature is available in acroread and it would be very nice having it in Okular, too. Reproducible: Always
Maybe duplicate to 189872 and 323070.
*** This bug has been marked as a duplicate of bug 323070 ***