• <progress id="47fdn"><track id="47fdn"></track></progress>

    <rp id="47fdn"><object id="47fdn"><input id="47fdn"></input></object></rp>


    In photography or any optical system, the point at which an adjustable lens hones incoming light (or electron beams) to the smallest spot, generally producing the sharpest image. Focus also refers to the act of adjusting a lens to sharpen an image.

    All text and images are licensed under a Creative Commons License
    permitting sharing and adaptation with attribution. (See Copyrights for details.)

    PrintWiki – the Free Encyclopedia of Print
    About    Hosted by WhatTheyThink