Originally posted by Sandy Hancock I would have thought, by definition, it would have to be at minimum focus distance.
It should be at the minimum focus distance for some focal length, but it may not be at the longest telephoto setting.
I've had several point and shoot cameras that have all had their maximum magnification at somewhere around the middle of their zoom range.
In every case, they could focus more closely at the wide end of the lens, at a loss of magnification due to the wide setting, or they could zoom all the way end and lose the minimum focus distance.
The best magnification was always somewhere near the middle.
Combine that with focus breathing (which I think is an element of the same optical characteristic), and you can end up with a lens that doesn't give you quite what you expect on the long end...
-Eric