Utilisation filtre gris neutre ND8 pour paysage maritime

Cormorant sur un rocher iceberg

Cormorants sur un rocher iceberg, Cap Sizun, 55mm 1,3s F36 ISO100.

J’ai acheté récemment un filtre gris neutre ND8 pour partir à la neige en janvier dernier. Il permet de réduire l’intensité lumineuse mais sans changer les couleurs. Il existe différents filtres gris neutre, ND1,2,4. Le ND8 permet de réduire de 3 diaphragme ou 3 IL l’exposition. Il laisse passer seulement 12,5 % des rayons lumineux. Pratique à la neige ou à la plage ou la lumière est intense. On peut avoir plusieurs utilisations d’un filtre gris neutre:

- pour faire des portraits en plein soleil avec une ouverture importante (f1.8 par exemple). Avec de telle ouverture, le calculateur d’exposition est souvent obligé d’utiliser des vitesses d’obturation proche de la limite du boitier (1/4000s). Le filtre gris neutre permet de laisser une marge de manœuvre plus importante. J’utilise ce filtre sur mon objectif 18-55mm de base, la faible ouverture maximale de cet objectif ne permet pas d’utiliser le filtre dans ce cas.

- pour faire des poses un peu plus longue en pleine journée. Idéal pour travailler sur les objets en mouvements et notamment l’eau ! Un temps de pose plus long sur l’eau donne un effet huileux et diffus.

Je me suis amusé au Cap Sizun dans le Finistère Sud avec ce filtre. Attention aux poussières sur un filtre gris neutre car une pause longue fait apparaitre des taches énormes sur la photo que l’on voit que sur l’écran de l’ordinateur.

Je me suis également amusé à faire quelques effets avec Lightroom comme vous pouvez le constater sur cette série de photo. Si un effet vous plait, je peux vous fournir le fichier .lrtemplate d’export Lightroom. Il suffit de mettre un commentaire sur ce post.

Cap Sizun

18mm 1,6s F22 ISO100

Bateau voguant entre les rochers

55mm 1/4s F22 ISO100

Rocher de la seconde guerre mondiale

55mm 1s F22 ISO100

Le vieux rocher

55mm 1/4s F22 ISO100

Le ruisseau vers la mer

18mm 0,8s F22 ISO100

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