Hello,
I am experiencing the same issue, but with your plugin Hendrix World Camera as a map zoom / camera zoom plugin.
Originally, I was using the VisuStellaMZ MapCameraZoom plugin. However, I purchased your World Camera plugin (solely to enable your post-processing plugin to work) and disabled the VisuMZ one, yet the problem persists (images now appear even more zoomed out).
I am also using RPG Maker MZ's native function to change the screen dimensions (set to 1920x1080). However, if I disable both camera plugins, the images display correctly; therefore, I do not believe the issue stems from that or from any plugin other than the camera-related ones (but Camera Zoom is mandatory for my game).
I also tested your World Camera plugin with the Zoom feature disabled (Zoom Method set to 0), and the images are still zoomed out.
Thanks in advance for your help; Have a great day.
PS : Rpg Maker MZ 1.9.0, Hendrix World Camera 1.01, Hendrix Post Processing 1.1.0