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H. Roussel, Opticien-Fabricant was a lens maker in Paris. In the early 20th century it advertised its symmetric lens constructions, for example double triplet lenses. The effect of those constructions against chromatic aberration was called anti-spectroscopique. Later, in the 1930s, P. Roussel was named as constructor of the lenses on the company's lens list. At that time Roussel's lens names were Trylor and Stylor. Enlarging lenses marked "H.Roussel Trylord" are a scarce find:

h_rousseltrylorII.jpg

Les càmeres amb lent H. RousselEdit

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