Set camera aspect ratio and position

Hey there,

I was trying for a while now, but I can’t find out how to set the camera aspect without scaling it with the screensize. I need one specific camera view on an object which shall always be displayed at a certain position in relation to the UI (eg. the header or something) and it shall always stay the same aspect ratio (4:3).
Right now I managed to move the view in relation to the screen, but as soon as I change the game resolution it expands the cameras view realtive to the screen and the position of the view is also set in relation to the Screen and not to the UI…

This might be a good read: