As you can see, the image from the lens is in quite a strange aperture. The lens is pretty much an elaborate and neater pin-hole lens, with no glass elements other than a plastic one which is just decoration I think.
The lens has a large central opening and 8 small holes around the outside, which you can almost make out in the vignette pattern in this image – looks a bit like a cog.
The best use for this lens are well lit landscapes and distant portraits as the minimal focal distance is around 2m. I mainly use these photos on Instagram, given that a square crop suits them best, which you can see in tomorrow’s examples.