Half a croissant, on a plate, with a sign in front of it saying '50c'
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microfresnel lens at phones does wide angle and regular simultaneously

Fresnel lens with smaller than human perception reolution has different angles on it to make light do wide angle as well as regular view interlaced on the CCD, software figures out which is which, producing better images
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Someone asked why not use a wide angle lens (possibly like a clip on) instead of a Selfie stick. You can do both. I know about the lytra, which if modified would likely work. Another way to do it is to have a fresnel lens (or one of the new waveguide lenses) with grooves that are at slightly different angles. the software figures out which image is which, a little like TV interlacing. Doing this at higher than human visual resolution seems very possible, as there are probably 100 MP cameras now.
beanangel, Jun 14 2017

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