(Joseph), avusturyalı mühendis ve matematikçi (Szepesböla, Macaristan, bugün Spisskâ Belâ, Slo- •vakya, 1807 – Viyana 1891). 1840’ta ilk çift fotoğraf objektifini yaptı ve anastig- mat önleyicilik ve alan düzlemselliği koşulunu belirledi.
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