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<blockquote data-quote="480sparky" data-source="post: 298586" data-attributes="member: 15805">What I'd really like to see is PROOF that a filter saved a lens.&nbsp; Not just someone saying, &quot;My filter was trashed, therefore my lens was saved.&quot;&nbsp; The glass in filters is far thinner than the front element of a lens, and the ring of a filter is far thinner than the barrel of a lens.&nbsp; So a filter is much, much easier to knock off that the lens it's attached to.A sample of one does not constitute proof.&nbsp; Especially when it's just a person saying it's so.How do you prove it?&nbsp; Simple.&nbsp; Take the damaged filter off, and let the lens take an identical hit.&nbsp; If the lens gets damaged, then you proved the filter saved the lens.&nbsp; If not, you put a filter on for no good reason and now will spend more money for false security.The problem with this method is two-fold.&nbsp; One, no one want to subject their lens to another hit. I get this.&nbsp; I wouldn't either.&nbsp; Well, I couldn't, 'cuz my lenses don't have filters.&nbsp; The second problem is the hit is usually not in a controlled environment, so duplicating the hit exactly and precisely is impossible.</blockquote>

[QUOTE="480sparky, post: 298586, member: 15805"] What I'd really like to see is PROOF that a filter saved a lens. Not just someone saying, "My filter was trashed, therefore my lens was saved." The glass in filters is far thinner than the front element of a lens, and the ring of a filter is far thinner than the barrel of a lens. So a filter is much, much easier to knock off that the lens it's attached to. A sample of one does not constitute proof. Especially when it's just a person saying it's so. How do you prove it? Simple. Take the damaged filter off, and let the lens take an identical hit. If the lens gets damaged, then you proved the filter saved the lens. If not, you put a filter on for no good reason and now will spend more money for false security. The problem with this method is two-fold. One, no one want to subject their lens to another hit. I get this. I wouldn't either. Well, I couldn't, 'cuz my lenses don't have filters. The second problem is the hit is usually not in a controlled environment, so duplicating the hit exactly and precisely is impossible. [/QUOTE]

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