correcteur de coma

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j'envisage d'acheter un correcteur de coma en 3 pouces pour mon ASA10N afin de me passer de ma lulu  106/700.

mais je ne trouve que des réducteurs ASA 0,73x en 2 pouces .

suivant vous celui ci serait il approprié ?


existe t'il en O,75x en 3 pouces ?

merci d'avance

Edited by aubriot

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