I've uploaded a few photos. all of my photos are very good resolution or at least i think they are and Many are the same when it comes to aspect ratios. Yet some of them get a 2 monitor rating and only one got a 3 monitor rating, but i can't see the difference in the Photos as to why one got one rating and the other got the other rating? can someone shed some light on this for me? what to look out for, what to make sure your photos include? or even where to find this information so i don't have to bug all of you guys?

Thanks for the infor I'll keep that in mind when i'm posting. So just to be clear it has to be at least 5040 X 1680? Again thanks for you info on this it helped alot