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<blockquote data-quote="BackdoorArts" data-source="post: 181922" data-attributes="member: 9240">Here's the best way to see the difference, and check if it's REALLY a 10 stop filter.1. Shoot your unfiltered shot in manual mode, setting your exposure manually using the meter in the viewfinder, or shoot in Aperture mode and copy the settings into Manual mode.2. Use an app like NDTimer to adjust your shutter speed for use with the filter (trusting the in-camera meter with a 10-stop filter is risky in many situations).&nbsp; If your baslineline image is 1/1000 sec. then you should be shooting at 1 sec. with a 10-stop filter.3. Shoot with the filter in manual mode, changing only the shutter speed to the value produced by the app.4. Compare shots.You can also do this manually since each &quot;stop&quot; added effectively doubles your shutter speed, but if can get confusing to some since &quot;doubling&quot; fractions is really dividing the bottom number by 2, and when you from 1/125 it goes to 1/60 and not 1/62.5, but you get the idea.&nbsp; If you set your ISO Sensitivity Step Value in the Custom Menus to 1/2 and not 1/3, then each click of the shutter speed adjustment wheel equates with one stop change, so for a 10-stop filter just roll the shutter speed wheel through 10 clicks.</blockquote>

[QUOTE="BackdoorArts, post: 181922, member: 9240"] Here's the best way to see the difference, and check if it's REALLY a 10 stop filter. 1. Shoot your unfiltered shot in manual mode, setting your exposure manually using the meter in the viewfinder, or shoot in Aperture mode and copy the settings into Manual mode. 2. Use an app like NDTimer to adjust your shutter speed for use with the filter (trusting the in-camera meter with a 10-stop filter is risky in many situations). If your baslineline image is 1/1000 sec. then you should be shooting at 1 sec. with a 10-stop filter. 3. Shoot with the filter in manual mode, changing only the shutter speed to the value produced by the app. 4. Compare shots. You can also do this manually since each "stop" added effectively doubles your shutter speed, but if can get confusing to some since "doubling" fractions is really dividing the bottom number by 2, and when you from 1/125 it goes to 1/60 and not 1/62.5, but you get the idea. If you set your ISO Sensitivity Step Value in the Custom Menus to 1/2 and not 1/3, then each click of the shutter speed adjustment wheel equates with one stop change, so for a 10-stop filter just roll the shutter speed wheel through 10 clicks. [/QUOTE]

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