OOPS!

Basic, schoolboy, physics and I forgot.
I noticed this problem with "The big un" (Canon). Guessed what might be the problem, took off the lens, went "click", couldn't see problem.
I had forgotten the simple principle of "Inversion" and was, like a prize pillock, gazing into the TOP rather than the bottom to see if I was right about the fault.
Another reason for this particular shot - it shows, yet again, the Buddleja alternifolia which I've been intending to feature as a sort of "semi-green". All winter it has been slowly losing last year's leaves and showing more & more of "next"/this year's.