No specific reason other than the ability to reset things to the default state; otherwise it would be a manual task when needed.
However, I'll see if we can keep the camera angle/zoom and just move it to where the action takes place when you hit collect/capture.
Never thought I'd hear about a problem of too many resources over your lands!
I'll have a think about what can be done, but this may not be as quick as the camera fix above (I have no idea where such filter controls would be located yet).