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Old 02-12-2014, 04:09 PM
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ShadowGLI ShadowGLI is offline
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Join Date: May 2009
Location: Leominster, Ma
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EF Lens Work - Canon's free PDF that describes nearly everything photography related. From photo technique, lens abilities and purposes to highly technical design terminology and examples. (canon-europe.com)

http://www.canon-europe.com/support/...ork_iii_en.asp
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