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Learning
Photography Q&A
calculating "darkness factor" of IR filter
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<blockquote data-quote="hark" data-source="post: 763352" data-attributes="member: 13196"><p>As long as you don't touch the focusing ring, the filter should be pretty simple to install without changing focus. I don't have a lens in front of me, but I don't think you can change focus just by holding the front element of the lens and turning. If it's a push-pull lens, then you might risk pushing it in further if you aren't careful.</p></blockquote><p></p>
[QUOTE="hark, post: 763352, member: 13196"] As long as you don't touch the focusing ring, the filter should be pretty simple to install without changing focus. I don't have a lens in front of me, but I don't think you can change focus just by holding the front element of the lens and turning. If it's a push-pull lens, then you might risk pushing it in further if you aren't careful. [/QUOTE]
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Learning
Photography Q&A
calculating "darkness factor" of IR filter
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