I have a very big marker ( 2m by 1m). I read in some faq that it is wise to use an image that is close to the one that is put into vuforia - basicly the camera image size. thing is, i have a scene like a window into something ( and also extending into userspace from the marker). this means that the user will look at the marker from all angles and especially distances. i tried an image thats 1000px and one thats 2000px but i got the same tracking quality and the yellow crosses seem identical. since i can walk close to the marker I thought that a higher res image would provide a better tracking because of its resolution (when closer). Is there a difference ?