As a Premium Member clicking on a photo which is a
big pic will show the original high resolution photo.
To demonstrate the difference, below are two sections
of the same picture, the one on the left is at the normally seen resolution,
while the one on the right is at the photo's original uploaded resolution.
We appreciate that the above demonstration might not be clear to everyone, so below are two actual 17" monitor photographs showing the physical size difference of the two images.