How do I override camera dimensions?

scullygirl818_02147fecb6

The camera dimensions keeps overriding the render size because I used a camera setting from a product. How do I get it to override with the global render settings? I'm aware that I can change the dimensions within the camera parameters, but that is not the easiest way to do it when you have multiple cameras. I often get the camera where I want it then change what dimensions I want to render after the fact. I tried searching this on the forum and I thought it was to turn off local dimensions in the camera parameters but that didn't help; it's still overriding it.

Gordig

Select the camera, select Dimensions in the Parameters or Camera pane, and turn "Use Local Dimensions" off.

edit: whoops, just saw the last line of your post.