basically, thie device pictured is a lens, even though it has a stand, a shutter, a beamsplitter with an ocular and a CDS sensor with a coresponding measuring insturment. The latter 3 are of no use since my Z7 tethered to my laptop manages everything except focussing; which is done by smoothly running knobs on the device. No problems with the notorious moving focus point of the Z since the lens has a flat field and focussing on a big screen is not very demanding.
p.
