Leçon 7 de 62
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Exercice 5

Entraînez-vous à prendre des photos de voitures qui passent devant vous. Prenez des photos selon des angles différents. Quelles sont les vitesses d’obturation nécessaires pour figer ces voitures selon l’angle sous lequel vous les
photographiez ?

Effet de l’angle de prise de vue sur la fixation du mouvement

Trouvez une scène qui comporte un sujet en mouvement que vous puissiez prendre de façon réitérée quand il se déplace à la même allure, comme des automobiles qui roulent à peu près à la même allure sur une route.

Faites la mise au point sur l’endroit où les voitures vont passer. Prenez le même sujet.

Réglez votre temps de pose sur 1/125 de seconde. Il ne faut pas que vous suiviez le mouvement des voitures avec votre appareil, il faut le garder fixe.

Prenez position à 5 mètres de l’endroit où passe votre sujet et prenez une photo au moment où votre sujet passe ( comme dans le premier exercice )

Ensuite changez votre emplacement de telle façon à ce que la ligne de mouvement soit à un angle de 45 degrés. Prenez une photo.

Changez encore d’emplacement de façon à ce que votre sujet en mouvement vous vienne droit dessus (ou presque…sad restez prudent !)

Photographiez toujours au 1/125 de seconde.

Examinez vos images et observez à quel point le flou dû au mouvement a changé lorsque vous changiez la position de votre appareil.

4 réponses à “Exercice 5”

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