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Exercice 4

Entraînez-vous à prendre des photos de voitures qui passent devant vous. Prenez des photos à différentes distances. Quelles sont les vitesses d’obturation nécessaires pour figer ces voitures selon la distance à laquelle vous vous trouvez ? Ne suivez pas le mouvement des voitures avec votre appareil, laissez le fixe.

Effet de la distance 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.


Réglez votre vitesse d’obturation sur 1/125 de seconde. Faites une photo du sujet en vous plaçant à 3 mètres de l’endroit où le sujet en mouvement doit passer. Reculez ensuite à 8 mètres et prenez une autre photo. 

Reculez encore à 15 mètres et prenez une photo.

Ne suivez pas le mouvement des voitures avec votre appareil, laissez le fixe.

Regardez vos photos et remarquez ce qu’il est advenu de la quantité de flou dû au mouvement à mesure que vous augmentiez la distance appareil-sujet.

2 réponses à “Exercice 4”

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