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Lenses
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Number of Filters Before Vignetting
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<blockquote data-quote="aroy" data-source="post: 215397" data-attributes="member: 16090"><p>The expensive filter casing and step up rings are made of hard brass compound, while the less expensive ones are made of aluminum. Aluminum has problem of sticking in cold weather and it being softer than brass can deform its threads easier. Consider the price of "expensive " step up rings with respect to the filters themselves (let alone the lenses) and it is a worth while investment as the rings will last practically for ever.</p></blockquote><p></p>
[QUOTE="aroy, post: 215397, member: 16090"] The expensive filter casing and step up rings are made of hard brass compound, while the less expensive ones are made of aluminum. Aluminum has problem of sticking in cold weather and it being softer than brass can deform its threads easier. Consider the price of "expensive " step up rings with respect to the filters themselves (let alone the lenses) and it is a worth while investment as the rings will last practically for ever. [/QUOTE]
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Number of Filters Before Vignetting
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