SOLVED. I should 'look' before I 'leap' There is the little lever one can move manually ... Ho hum
For fun I am getting a lens reversal ring for my Nikon D3000 to the
18-105mm f/3.5-5.6G ED-IF AF-S VR DX Zoom-NIKKOR. These lenses do not have an aperture ring and when not connected to the camera electronics, the aperture is defaulted to minimum. This gives a better DOF and I guess one would need good light to secure a pic.
Question: Can the lens aperture be altered when not camera connected?
(I realise that camera operation & focus need to be manual)