Image Circle | JuzaPhoto

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Galleries
Still Life

12.8 MEGAPIXEL

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Varie 2 View gallery (12 photos)

Image Circle sent on October 20, 2023 (14:18) by Henry62. 0 comments, 48 views.

1/10 f/1.9, ISO 1250, hand held.

Prova rudimentale ma indicativa, per misurare il diametro del cerchio di immagine prodotto dal Plena. Collocato ad una distanza di 16 mm da un foglio di carta millimetrata attaccato alla parete (tiraggio Nikon Z = 16 mm), montato il paraluce per non aver luce parassita sulla parete e posto l'obiettivo con l'asse orizzontale sul piano di appoggio e perpendicolare alla parete, ho messo della carta opalina davanti alla lente frontale e illuminato con una torcia da cellulare per produrre il cerchio di immagine mostrato in foto. La sorgente luminosa è stata fatta muovere per ben delineare il cerchio di immagine sui due estremi del diametro orizzontale usato per la misurazione. Il diametro così misurato risulta pari a 5 cm circa , la misura nominale sulla carta millimetrata è 50 mm.

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