I had the first version, as zx9 has I think. The only problem I had was with the shutter using it outside in bright light. The four pictures I took on one occasion showed my blurred fingers at the edge of the frames as I opened and closed the shutter. I sold the first camera and bought the new model, with three pinholes this time. The reason for replacing the first camera, with two pinholes, was to take advantage of the filter holder so, in the rare circumstances where the exposure is very short, that I could apply a ND filter and , in any event, use a yellow or red filter. The three alternative pinholes do allow vertical shift but it isn't easy to evaluate what the difference between each view is when you take a shot, blindingly obvious when you look at the negatives.
Still, a nice chunky, quirky and very basic camera.
By the way, your pictures are nicely exposed. What film did you use, any details of the exposure setting.