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Polar Pro Filters / App and Usage Question...
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<blockquote data-quote="nutsnbolts" data-source="post: 37927" data-attributes="member: 4256"><p>Sorry I didn't mean to mix shutter speed and frame rate. The spark can't definitely change frame rate (fps) because it's at a constant of 30 fps. So when I seek out which filter I use at 30 fps and pointing away from the sun in the direction of what I want to capture. Since it is sunny the shutter speed goes up to like 1/2000. </p><p></p><p>So I take those numbers and put into the app. 30fps, 1/2000 shutter, and 100 iso</p><p></p><p>Click calculate and it will tell me what ND filter to use. </p><p></p><p>In this case ND32. Now I take that filter put it on and shouldn't the shutter speed go down to 1/60 which is 2x the fps? Instead I get 1/120. That is about 1 stop over exposed. </p><p></p><p>Does this make sense?</p><p></p><p>My question is why 1/120. I thought it's supposed to go down.</p></blockquote><p></p>
[QUOTE="nutsnbolts, post: 37927, member: 4256"] Sorry I didn't mean to mix shutter speed and frame rate. The spark can't definitely change frame rate (fps) because it's at a constant of 30 fps. So when I seek out which filter I use at 30 fps and pointing away from the sun in the direction of what I want to capture. Since it is sunny the shutter speed goes up to like 1/2000. So I take those numbers and put into the app. 30fps, 1/2000 shutter, and 100 iso Click calculate and it will tell me what ND filter to use. In this case ND32. Now I take that filter put it on and shouldn't the shutter speed go down to 1/60 which is 2x the fps? Instead I get 1/120. That is about 1 stop over exposed. Does this make sense? My question is why 1/120. I thought it's supposed to go down. [/QUOTE]
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Polar Pro Filters / App and Usage Question...