Editing 1809: xkcd Phone 5

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: Contrast the [https://www.easy-macro.com EasyMacro] band - 4x zoom with little appreciable thickness.
 
: Contrast the [https://www.easy-macro.com EasyMacro] band - 4x zoom with little appreciable thickness.
 
: Assuming 60x is referring to the base focal length of the iPhone and that the xkcd Phone 5 has the same dimensions as the iPhone 7 Plus then in 35mm format this lens would be 30-1800mm f/0.4-f/24. This is a completely infeasible (but not physically impossible) lens in 35mm format, but similar small format lenses (albeit with more reasonable aperture ranges) do exist in mass production, for example the Nikon P900.
 
  
 
; LORAN navigation
 
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