10 Stop Nd Filter Conversion Chart

By | 05/08/2022

Tabella conversione Filtri ND

ND Filters Conversion Nautical chart: Neutral Density Filter Table

ND (Neutral Density) filters
accept the characteristic of absorbing a sure amount of light and assuasive you to
lengthen the exposure times
to the length you want (for instance to make long exposures).

This feature makes ND filters unique, equally it is
incommunicable to recreate the exact same consequence in post product. Fifty-fifty stacking shots, a technique to try to simulate long exposure, always presents the
problem of artefacts and “ghosting”.

Just
how do you calculate shutter speeds using ND filters? It is a a mathematical process that you can do using your mobile phone or dedicated apps (such as the free NiSi one, for
iOS
or
Android).

Another method to calculate or larn how to calculate shutter speed is a
conversion table. To learn more about “ND filters” we also recommend our complete
guide on choosing ND filters. If you simply want to consult the table you can skip the next paragraph, otherwise you can read below to find out how to calculate the exact shutter speed in your caput or quickly with the calculator.

Calculate shutter speed

Computing shutter speeds with an ND filter is a straightforward performance, requiring a few steps and a calculator (or strong mental arithmetic!):

  1. Take the shot to accomplish the exposure you want
    and annotation the fourth dimension. For instance 1/sixty of a 2d. If you lot are using a GND and Polariser as-well as dark “long exposure” ND. Accept your examination shot with everything
    except the dark ND
    in place.
  2. Have a filter, for example the
    NiSi ND1000, and note that it is called “ND1000”. “yard” indicates precisely
    how many times we have to multiply the shutter speed
    in one case the filter is mounted,
    as one thousand times less light volition enter the lens. Consequently, nosotros are going to lengthen the speed 1000 times to friction match our unfiltered exposure.
  3. If we accept a fractional time, equally in this case, we report the value  metrically.
    And then 1/60 of a 2d is 0.016″. A simple adding,
    1 divided past threescore.
  4. Multiply this value by 1000, that is
    0.016 * 1000 = 16.vi″. The exact shutter speed to go a photo with the aforementioned exposure by mounting the ND1000 is about 16 seconds, in photographic camera nosotros can apply 15 seconds which is the closest nosotros can gear up. Or using a remote command y’all tin can shoot for exactly sixteen seconds.
  5. If nosotros only have an
    ND256 (eight stops)
    available? The calculation would be 0.016 * 256 = 4.26. That is, most 4 seconds.

These calculations
are not always practical in the field, then a simple table can help usa as we will encounter below.

ND filter conversion table

Beneath you will find the
conversion table: in the commencement column on the left you volition find the shutter speed without ND filter. This is the fourth dimension you have assail the camera to expose the photo correctly with only the dark ND absent. If yous use GND filters and the polariser,
which we highly recommend, it is amend to have them mounted and then the only difference will be the ND filter (we recommend you also read the
guide to long exposures).

Look in the
left cavalcade for the exposure time
you got earlier installing the ND and then scroll to the correct to detect the correspondence of the ND  and time y’all prefer. Yous tin can choose the fourth dimension you desire and consequently which ND filter to apply (for example if we want a photo with the move of the clouds information technology is likely that we will as well
shoot up to 120 seconds, or about 3 seconds to obtain a motion of the water that is not likewise choppy , and and so on). Or y’all can discover how long to expose using a certain ND filter.

The table scrolls right to display all the columns.

Shutter speed with several stops (in fractions of a second and seconds)

Exposure fourth dimension without ND filter 1 Stop (0.3), ND2 ii End (0.six), ND4 3 Stop (0.9), ND8 four Cease (ane.2), ND16 5 Stop (i.5), ND32 vi Stop (one.viii), ND64 7 Terminate (ii.1), ND128 eight Terminate (2.4), ND256 9 Cease (2.vii), ND512 10 Terminate (iii.0), ND1000 11 Cease (3.three), ND2000 15 Cease (four.five), ND32000 xx Stop (6.0), ND1000K
1/8000 ane/4000 i/2000 1/1000 1/500 i/250 1/125 1/60 1/30 i/15 1/viii 1/four 4 125
1/4000 1/2000 ane/1000 1/500 i/250 1/125 1/60 1/xxx 1/15 1/8 1/4 one/2 8 250
i/2000 ane/yard 1/500 1/250 1/125 ane/sixty 1/30 one/xv i/8 i/iv 1/two one sixteen 500
1/1000 1/500 one/250 1/125 1/threescore ane/xxx 1/15 1/8 1/4 1/2 1 2 32 1000
1/500 one/250 i/125 1/60 1/30 ane/xv 1/8 ane/4 one/ii 1 2 4 64 2000
1/250 1/125 1/60 1/30 one/xv 1/8 1/4 i/two one ii four 8 128 4000
1/125 1/60 i/xxx 1/15 1/viii 1/4 i/2 ane 2 4 8 16 256 8000
1/60 1/xxx 1/15 1/viii 1/iv i/2 1 2 4 8 sixteen 32 512 16000
i/30 ane/15 1/8 1/4 1/2 1 2 4 8 16 32 64 1024 32000
1/15 ane/8 ane/4 i/two 1 2 4 8 16 32 64 128 2048 64000
1/eight 1/iv 1/2 1 2 4 8 16 32 64 128 256 4096 128000
1/iv 1/two 1 2 4 8 16 32 64 128 256 512 8192 256000
1/2 one two four 8 sixteen 32 64 128 256 512 1024 16000 500000
one 2 four 8 16 32 64 128 256 512 1024 2048 32000 1000000
ii 4 eight 16 32 64 128 256 512 1024 2048 4096 64000 2000000
iv 8 xvi 32 64 128 256 512 1024 2048 4096 8192 128000 4000000
8 16 32 64 128 256 512 1024 2048 4096 8192 16384 256000 8000000
fifteen 30 60 120 240 480 960 1920 3840 7680 15360 30720 480000 15000000
30 60 120 240 480 960 1920 3840 7680 15360 30720 61440 960000 30000000

Permit’s accept a applied example, past mounting the GND filter and the polariser you get a
shutter speed of ane/125 of a second, with good exposure. 2 possible scenarios:

  1. You want to shoot for 1 2d to capture the waves in the foreground that crash on the rocks,
    too long a time would make them “disappear”
    while
    at ane/125 the action is too “frozen”. Look for ane/125 on the outset right column of the tabular array, find this time on row vii then reading to the right look for “1 second” and discover it nether the 7 End ND128 cavalcade.
  2. Now you know that to shoot with those times y’all have to use a
    7 Stop ND128 filter
    but you lot only take a 3 and 10 stop filter and yous desire to know what time to set, look for the value i/125 in the starting time column and so read the outcome respective to the
    ND8 iii Stop and ND1000 x Stop, on the right. You find that with the 3 Stop you lot have to shoot for one/15 of a second, while with the x stop ND1000 for 8 seconds.

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Source: https://nisioptics.co.uk/nd-filters-chart-conversion-table/