Stylor
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.
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| Stylor 1:6.3 F=180 on an Antique Camera Simulator image by 情事針寸II (Image rights) |
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| asymmetrical 5-element construction by Roussel, lens speed f6.3 scanned by Dirk HR Spennemann (Image rights) |
  
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| Stylor 1:4.5 F=210, and Stylor 1:4.5 F=180 images by Dirk HR Spennemann (Image rights) |
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
