The Schneider Optics booth is minimal, but it has a couple of cool things set up. First is the iPro Lens system for iPhones. It uses a compact case, with a bayonet-style mount to attach lenses. And it looks nice enough to stay on your phone at all times. It adds some new capabilities to your phone with fisheye, macro, and telephoto options available.
The aperture of the lens controls the amount of light that passes through on its way to the camera's sensor or film plane. A camera's aperture is also commonly called its f-stop, though 'f-stop' technically refers to the diameter of the opening created by internal adjustable blades, rather than the entire mechanism.
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