Différences entre les versions de « Photographie/Filtres optiques/Filtres gris neutre »

Les meilleurs résultats sont obtenus avec des filtres de forte densité, ND400 ou ND1000, avec lesquels on atteint sans problème les temps de pose de plusieurs secondes ou de plusieurs minutes nécessaires pour réussir ce genre de prise de vues. Faut-il préciser que l'usage d'un [[trépied]] très rigide s'impose, sauf bien sûr si l'appareil peut ou doit être parfaitement immobilisé d'une autre manière, comme c'est le cas pour la photographie prise depuis la voiture.
 
{| class="wikitable" style="texte-align:center"
|+ <big>Détermination du temps de pose avec les filtres gris neutre usuels<br/> utilisés seuls ou en association</big>
|-
| | <center>'''Tps de pose (en secondess) sans filtre (ou avec un filtre polarisant uniquement)'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND8'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND16'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND8+ND16'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND400'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND1000'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND400+ND16ND8'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND1000 ND400+ un ND16'''</center>
| | <center>'''Tps de pose (en secondess) avec un ND400ND1000 + un ND16+ND8'''</center>
| | <center>'''Tps de pose (s) avec un ND1000 ND400+ un ND16 + un ND8'''</center>
| | <center>'''Tps de pose (en minutes) avec un ND1000 + un ND400ND16 + un ND8'''</center>
| | '''Tps de pose (min) avec un ND1000 + un ND400'''
 
|-
| | <center>1/1 000</center>1000
| | <center>1/125</center>
| | <center>1/60</center>
| | <center>1/8</center>
| | <center>1/2,5</center>
| | <center>1</center>
| | 3
| | <center>6</center>
| | 6
| | <center>16</center>
| | 16
| | <center>51</center>
| | 51
| | <center>2 min 8 s</center>
| | <center>62 min 408 s</center>sec
| | 6 min 40 sec
 
|-
| | <center>1/800</center>
| | <center>1/100</center>
| | <center>1/50</center>
| | <center>1/6</center>
| | <center>1/2</center>
| | <center>1,3</center>
| | 4
| | <center>8</center>
| | 8
| | <center>20</center>
| | 20
| | <center>1 min 4 s</center>
| | <center>21 min 404 s</center>sec
| | <center>82 min 2040 s</center>sec
| | 8 min 20 sec
 
|-
| | <center>1/640</center>
| | <center>1/80</center>
| | <center>1/40</center>
| | <center>1/5</center>
| | <center>1/1,6</center>
| | <center>1,6</center>
| | 5
| | <center>10</center>
| | 10
| | <center>25</center>
| | 25
| | <center>1 min 20 s</center>
| | <center>31 min 20 s</center>sec
| | <center>103 min 2520 s</center>sec
| | 10 min 25 sec
 
|-
| | <center>1/500</center>
| | <center>1/60</center>
| | <center>1/30</center>
| | <center>1/4</center>
| | <center>1/1,25</center>
| | <center>2</center>
| | 6
| | <center>12</center>
| | 12
| | <center>32</center>
| | 32
| | <center>1 min 42 s</center>
| | <center>41 min 1642 s</center>sec
| | <center>134 min 2016 s</center>sec
| | 13 min 20 sec
 
|-
| | <center>1/400</center>
| | <center>1/50</center>
| | <center>1/25</center>
| | <center>1/3</center>
| | <center>1</center>
| | <center>2,5</center>
| | 8
| | <center>16</center>
| | 16
| | <center>40</center>
| | 40
| | <center>2 min 8 s</center>
| | <center>52 min 208 s</center>sec
| | <center>165 min 4020 s</center>sec
| | 16 min 40 sec
 
|-
| | <center>1/320</center>
| | <center>1/40</center>
| | <center>1/20</center>
| | <center>1/2,5</center>
| | <center>1,25</center>
| | <center>3</center>
| | 10
| | <center>20</center>
| | 20
| | <center>50</center>
| | 50
| | <center>2 min 40 s</center>
| | <center>62 min 40 s</center>sec
| | <center>206 min 5040 s</center>sec
| | 20 min 50 sec
 
|-
| | <center>1/250</center>
| | <center>1/30</center>
| | <center>1/15</center>
| | <center>1/2</center>
| | <center>1,6</center>
| | <center>4</center>
| | 13
| | <center>25</center>
| | 25
| | <center>1 min 4 s</center>
| | <center>31 min 244 s</center>sec
| | <center>83 min 3224 s</center>sec
| | <center>268 min 4032 s</center>sec
| | 26 min 40 sec
 
|-
| | <center>1/200</center>
| | <center>1/25</center>
| | <center>1/13</center>
| | <center>1/1,6</center>
| | <center>2</center>
| | <center>5</center>
| | 16
| | <center>32</center>
| | 32
| | <center>1 min 20 s</center>
| | <center>41 min 1620 s</center>sec
| | <center>104 min 4016 s</center>sec
| | <center>3310 min 2040 s</center>sec
| | 33 min 20 sec
 
|-
| | <center>1/160</center>
| | <center>1/20</center>
| | <center>1/10</center>
| | <center>1/1,3</center>
| | <center>2,5</center>
| | <center>6</center>
| | 20
| | <center>40</center>
| | 40
| | <center>1 min 40 s</center>
| | <center>51 min 2040 s</center>sec
| | <center>135 min 20 s</center>sec
| | <center>4113 min 4020 s</center>sec
| | 41 min 40 sec
 
|-
| | <center>1/125</center>
| | <center>1/15</center>
| | <center>1/8</center>
| | <center>1</center>
| | <center>3,2</center>
| | <center>8</center>
| | 25
| | <center>50</center>
| | 50
| | <center>2 min 8 s</center>
| | <center>62 min 508 s</center>sec
| | <center>176 min 450 s</center>sec
| | <center>5317 min 204 s</center>sec
| | 53 min 20 sec
 
|-
| | <center>1/100</center>
| | <center>1/12</center>
| | <center>1/6</center>
| | <center>1,3</center>
| | <center>4</center>
| | <center>10</center>
| | 32
| | <center>1 min 4 s</center>
| | <center>21 min 404 s</center>sec
| | <center>82 min 3240 s</center>sec
| | <center>218 min 2032 s</center>sec
| | <center>1 h 621 min 4020 s</center>sec
| | 1 h 6 min 40 sec
 
|-
| | <center>1/80</center>
| | <center>1/10</center>
| | <center>1/5</center>
| | <center>1,6</center>
| | <center>5</center>
| | <center>13</center>
| | 40
| | <center>1 min 20 s</center>
| | <center>31 min 20 s</center>sec
| | <center>103 min 4020 s</center>sec
| | <center>2610 min 40 s</center>sec
| | 26 min 40 sec
| | &nbsp;
 
|-
| | <center>1/60</center>
| | <center>1/8</center>
| | <center>1/4</center>
| | <center>2</center>
| | <center>7</center>
| | <center>17</center>
| | 50
| | <center>1 min 46 s</center>
| | <center>41 min 2646 s</center>sec
| | <center>144 min 1326 s</center>sec
| | <center>3514 min 3313 s</center>sec
| | 35 min 33 sec
| | &nbsp;
 
|-
| | <center>1/50</center>
| | <center>1/6</center>
| | <center>1/3</center>
| | <center>2,5</center>
| | <center>8</center>
| | <center>20</center>
| | <center>21 min 84 s</center>sec
| | <center>52 min 208 s</center>sec
| | <center>175 min 420 s</center>sec
| | <center>4217 min 404 s</center>sec
| | 42 min 40 sec
| | &nbsp;
 
|-
| | <center>1/40</center>
| | <center>1/5</center>
| | <center>1/2,5</center>
| | <center>3</center>
| | <center>10</center>
| | <center>25</center>
| | <center>21 min 4020 s</center>sec
| | <center>62 min 40 s</center>sec
| | <center>216 min 2040 s</center>sec
| | <center>5321 min 20 s</center>sec
| | 53 min 20 sec
| | &nbsp;
 
|-
| | <center>1/30</center>
| | <center>1/4</center>
| | <center>1/2</center>
| | <center>4</center>
| | <center>13</center>
| | <center>33</center>
| | <center>31 min 3340 s</center>sec
| | <center>83 min 5333 s</center>sec
| | <center>288 min 2653 s</center>sec
| | 28 min 26 sec
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/25</center>
| | <center>1/3</center>
| | <center>1/1,6</center>
| | <center>5</center>
| | <center>16</center>
| | <center>40</center>
| | <center>42 min 168 s</center>sec
| | <center>104 min 4016 s</center>sec
| | <center>3410 min 840 s</center>sec
| | 34 min 8 sec
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/20</center>
| | <center>1/2,5</center>
| | <center>1/1,3</center>
| | <center>6</center>
| | <center>20</center>
| | <center>50</center>
| | <center>52 min 2040 s</center>sec
| | <center>135 min 20 s</center>sec
| | <center>4213 min 4020 s</center>sec
| | 42 min 40 sec
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/15</center>
| | <center>1/2</center>
| | <center>1</center>
| | <center>9</center>
| | <center>27</center>
| | <center>1 min 7 s</center>sec
| | <center>73 min 620 s</center>sec
| | <center>177 min 466 s</center>sec
| | <center>5617 min 5346 s</center>sec
| | 56 min 53 sec
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/13</center>
| | <center>1/1,6</center>
| | <center>1,2</center>
| | <center>10</center>
| | <center>31</center>
| | <center>1 min 17 s</center>sec
| | <center>84 min 1226 s</center>sec
| | <center>208 min 3012 s</center>sec
| | 20 min 30 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/10</center>
| | <center>1/1,3</center>
| | <center>1,6</center>
| | <center>13</center>
| | <center>40</center>
| | <center>1 min 40 s</center>sec
| | <center>105 min 4020 s</center>sec
| | <center>2610 min 40 s</center>sec
| | 26 min 40 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/8</center>
| | <center>1</center>
| | <center>2</center>
| | <center>16</center>
| | <center>50</center>
| | <center>2 min 4 s</center>sec
| | <center>136 min 2040 s</center>sec
| | <center>3313 min 20 s</center>sec
| | 33 min 20 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/6</center>
| | <center>1,3</center>
| | <center>2,7</center>
| | <center>20</center>
| | <center>1 min 7 s</center>sec
| | <center>2 min 46 s</center>sec
| | <center>178 min 4753 s</center>sec
| | <center>4417 min 2647 s</center>sec
| | 44 min 26 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/5</center>
| | <center>1,6</center>
| | <center>3</center>
| | <center>26</center>
| | <center>1 min 20 s</center>sec
| | <center>3 min 20 s</center>sec
| | <center>2110 min 2040 s</center>sec
| | <center>5321 min 20 s</center>sec
| | 53 min 20 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/4</center>
| | <center>2</center>
| | <center>4</center>
| | <center>32</center>
| | <center>1 min 40 s</center>sec
| | <center>4 min 10 s</center>sec
| | <center>2613 min 4020 s</center>sec
| | <center>1 h 626 min 40 s</center>sec
| | 1 h 6 min 40 sec
| |
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/3</center>
| | <center>2,7</center>
| | <center>5</center>
| | <center>43</center>
| | <center>2 min 13 s</center>sec
| | <center>5 min 33 s</center>sec
| | <center>3517 min 3346 s</center>sec
| | 35 min 33 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/2,5</center>
| | <center>3,2</center>
| | <center>6</center>
| | <center>51</center>
| | <center>2 min 40 s</center>sec
| | <center>6 min 40 s</center>sec
| | <center>4220 min 4030 s</center>sec
| | 42 min 40 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/2</center>
| | <center>4</center>
| | <center>8</center>
| | <center>1 min 4 s</center>sec
| | <center>3 min 20 s</center>sec
| | <center>8 min 20 s</center>sec
| | <center>5326 min 2040 s</center>sec
| | 53 min 20 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/1,6</center>
| | <center>5</center>
| | <center>10</center>
| | <center>1 min 20 s</center>sec
| | <center>4 min 10 s</center>sec
| | <center>10 min 25 s</center>sec
| | 33 min 20 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|-
| | <center>1/1,3</center>
| | <center>6</center>
| | <center>12</center>
| | <center>1 min 38 s</center>sec
| | <center>5 min 8 s</center>sec
| | <center>12 min 49 s</center>sec
| | 44 min 26 sec
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
| | &nbsp;
 
|}