===== Other Information =====
  *[[other-info:academy-frame|Academy Frame and Magnification Factor]]
  *[[other-info:depth-of-field|Depth of Field]]
  *[[other-info:zoom-factor|Focal Length and Zoom Factor]]\\
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===== External Links =====
[[http://www.usa.canon.com/app/html/EFLenses101/focal_length.html|Canon Focal Length Comparison]]\\
[[http://www.dofmaster.com/dofjs.html|Depth of Field Calculator]]\\
[[http://www.paragon-press.com/lens/lenchart.htm|Focal Length Explanation]]\\
[[http://youtu.be/Am5wJUEiNAI|See how camera lenses are made]]\\
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  *<del>[[http://www.photoaficionado.com/situationroom/exposure.html|Exposure overview]]</del>
  *<del>[[http://www.photoaficionado.com/situationroom/aperture.html|Aperture overview]]</del>
FIXME