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The Stylor is a lens from the age of brass lenses, made in Paris by H. Roussel. It's a construction with 5 elements in 3 groups. The large number of its diaphragm blades give it an almost circular aperture.

The lens was available for different focal lengthes, with lens speed f4.5 or f6,3:

  • Stylor 1:4.5 F=135
  • Stylor 1:6.3 F=180
  • Stylor 1:4.5 F=180
  • Stylor 1:4.5 F=210
  • Stylor 1:6.3 F=270
  • Stylor 1:4.5 F=300