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What's so special about Groups and Elements
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<blockquote data-quote="480sparky" data-source="post: 296202" data-attributes="member: 15805"><p>I'm not looking for the <em>definition </em>of Groups and Elements. I want to know WHY the manufacturers want my to know how many of each are in a particular lens.</p></blockquote><p></p>
[QUOTE="480sparky, post: 296202, member: 15805"] I'm not looking for the [I]definition [/I]of Groups and Elements. I want to know WHY the manufacturers want my to know how many of each are in a particular lens. [/QUOTE]
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What's so special about Groups and Elements
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