ColorBox + Loupe Demonstration
Without loupe (width and height at 25% to force scaling)
Grouped Photo 1
Grouped Photo 2
Grouped Photo 3
With loupe (width and height at 25% to force scaling)
Grouped Photo 1
Grouped Photo 2
Grouped Photo 3
With loupe (but since images are already full size, the loupe will not be called)
Grouped Photo 1
Grouped Photo 2
Grouped Photo 3