Ahhh.. beautiful canopy shots.   Here's a few good ones I've gotten in  
Ohio.

#1 Is looking up into a ~120' Tulip trees in Mohican State Forest.    
#2 Is a grove ~140+' white pines in Hocking Hills State Forest.

_MG_1864.jpg 903K View Download

_MG_1732.jpg 796K View Download