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AMIS DES SELS D'ARGENT • Afficher le sujet - format 4X5

format 4X5

format 4X5

Messagede philippe C » Jeu 3 Juin 2010 08:53

Bonjour!
J'ai la possibilité de récupérer un vieil agrandisseur dont la fenêtre utile du passe vue est de 8x11cm.
Peut-on utiliser l'agrandisseur pour agrandir le 4X5 inch?
Quel est la taille standart des fenêtres de passe vue des agrandisseurs pour les plans films 4X5 inch?
Enfin quel est la focale de l'objectif d'agrandisseur la plus adaptée pour le 4X5?
Bien amicalement,
Philippe.
philippe C
 
Messages: 97
Inscription: Ven 18 Déc 2009 12:59
Localisation: LYON

Re: format 4X5

Messagede Bernard » Jeu 3 Juin 2010 20:29

Salut
Perso j'ai du 95/121 (mm) sur les passes vues dédiés au 4/5;
L'agrandisseur est un LPL 7450;
L'optique utilisée est un 105, il se dit du 150 pour le 4/5 aussi.
Voilà

Bonnes images

Bernard
Bernard
 
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Re: format 4X5

Messagede Olivier G » Sam 5 Juin 2010 09:01

Bonjour Philippe,

La focale normale du 4x5" est le 150mm... il te faudra donc un 150mm pour tirer tes négatifs.
@+
Olivier
----------
"Fais de ta vie un rêve, et d'un rêve une réalité".
(Antoine de Saint Exupéry)


Olivier G
 
Messages: 450
Inscription: Mar 17 Nov 2009 22:29
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Re: format 4X5

Messagede jean paul Royer » Sam 5 Juin 2010 11:07

Bonjour,

IL faut agrandir le passe vue a la lime sinon vous contenter du format dit 9/12 pour l'objectif un 135mm permet de tirez lesdeux format 4/5" et 9/12cm
jean paul Royer
 
Messages: 43
Inscription: Jeu 21 Jan 2010 11:48

Re: format 4X5

Messagede Ron Talis » Mar 8 Juin 2010 07:54

Bonjour, en plus de la fenêtre utile il faut vérifier que le plan/film rentre dans le passe vue
sans être abimé (froissé, plié...). L'objectif va aussi dépendre du système optique de l'agrandisseur.
Síl y a un condenseur, il faut choisir la distance focale adaptée. Si c'est un système à lumiére diffuse,
il suffit de contrôler si l'objectif couvre le format sans trop de vignetage.
Ron Talis
 
Messages: 4
Inscription: Ven 30 Avr 2010 21:09

Re: format 4X5

Messagede Bernard » Mer 9 Juin 2010 21:08

Bernard
 
Messages: 84
Inscription: Ven 4 Déc 2009 15:11
Localisation: Nîmes

Re: format 4X5

Messagede jean paul Royer » Jeu 10 Juin 2010 10:42

Bonjour,

Si votre surface sensible est de 95/121mm votre passe vue doit au moins être de cette dimension ou légèrement plus petite dans les 93/119mm. Si vous modifiez votre passe vue vous ne pourrez plus tirez du 9/12.
Mes plans films ont les mêmes dimensions que les vôtres, tous les châssis ont les mêmes cotes.
Un plan film 9/12 a une surface utile proche des 8/11cm. Les châssis 4/5 n’acceptent pas les films 9/12 ils flottent dedans par contre ils ont les mêmes dimension externe donc bien regardez sur le châssis s’il est 4/5 ou 9/12
jean paul Royer
 
Messages: 43
Inscription: Jeu 21 Jan 2010 11:48


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