Good point, Wolfie, about knowing your Market. Shooting for money is often much different than shooting for fun. And stock photography is exactly that, stock; it may sit idle for a long time, and then finally get used. [I only had one class once in plant biology...] Looks like a gradual lessening starting about 50 years before the tree was cut, with something really changing the last 25 years? Does one expect constant diameter growth rate? May be just normal for this kind of tree? What I think is really interesting are the two unusually wide rings right before things start to diminish...]