Pinhole is magical in that it requires no sensor, no mechanical parts and no lens. While it is possible to use a pinhole in place of a lens … a tiny hole in a simple box with a piece of light sensitive material inside is far more impressive.
Most of the people who shoot pinhole images use a simple box where the focal length produces a “normal” lens effect. However, by simply using…Pinhole Photography
A stereo image can easily be created with a pinhole camera that is designed with two pinholes. Pinhole photography
I was almost to the point of making my own mount when I discovered an eBay dealer who has begun making and selling adapters for Argus lenses to be mounted to digital cameras.
In designing anything, usability is what you try to incorporate into the thing being designed. Functionality is always more important than what a product looks like.