Corona frame buffer resolution

[LiamCramb]

Hey, sorry if this has already been covered. I'm new to corona and can't find a way to change the resolution of the frame buffer to what I'd like to be, instead of the amount of pixels it's taking up on my screen. For example in vray, I can select an option that allows me to change the vfb resolution to be the same as my final resolution that I've set in render settings in 3ds max. Is this possible somehow or something I just can't change?