Frank, Akira, Peter, Grahame. Jakov, thanks for commenting.
@ Akira : the CRT lens is attached with M39 to F mount conversion ring on M2 ring, as I would do on the Df. Please note that the combo is screwed on a mandatory macro-focusing rail.
I have deliberately chosen f/22 to get the most DOF possible perhaps at the detriment of sharpness.
Francis.