Hey antithing,
I’ve been doing some more research and realized that all Super 35’s are not created equal. The sensor we plan for in the editor is 24.88999x18.66 (1.33 aspect ratio), the sensor you’re using is 22x11.88 (1.85 aspect ratio) and the camera I used(Canon C100) is 24.6x13.8(1.78 aspect ratio). Once I manually entered my sensor width and height in UE4, everything matched up.
Were you just using the Super 35 preset in the editor?