A less conspicuous alternative to a soda can. I would recommend to printing it in gray-ish plastic, slightly worried about the temperature inside if it's black.
Not sure how the ellipsoid shape will affect the picture geometry. stay tuned. No results yet.
I attach a 5x7 sheet of photopaper with a piece of electric tape glued into a ring.
The pinhole itself is made on a piece of aluminium from a soda can which was then attached to the inside wall with electric tape. JB weld should be a better option.
The lid sits fairly tight by itself, but I also secured it with two #8-1.5 in machine screws.
The author marked this model as their own original creation.