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Other Photography Equipment
Back calculating exposure using variable ND filters for long exposure times
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<blockquote data-quote="Dave_W" data-source="post: 98067" data-attributes="member: 9521"><p>The examples I'm going off of show anywhere from 15 to 30 min to completely wipe people out. I agree it does seem like a long time doesn't it? In the mean time I did find this little tidbit</p><p></p><p><span style="color: #000000"><span style="font-family: 'arial'">For each stop of light that the filter blocks, you need to double the exposure time, so for a 10-stop ND filter, multiply the exposure by approximately 1,000.</span></span></p></blockquote><p></p>
[QUOTE="Dave_W, post: 98067, member: 9521"] The examples I'm going off of show anywhere from 15 to 30 min to completely wipe people out. I agree it does seem like a long time doesn't it? In the mean time I did find this little tidbit [COLOR=#000000][FONT=arial]For each stop of light that the filter blocks, you need to double the exposure time, so for a 10-stop ND filter, multiply the exposure by approximately 1,000.[/FONT][/COLOR] [/QUOTE]
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Back calculating exposure using variable ND filters for long exposure times
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