J.Petzval (version primitive de J.M. Eder) [n° 5]
f/3,4 F=100,000 mm (30,0°)
[ f/3,4 f=99,987 mm (30,0°) ]
f/3,4 F=100,000 mm (30,0°)
[ f/3,4 f=99,987 mm (30,0°) ]
J.Petzval (version primitive de J.M. Eder) [n° 5]
f/3,4 F=100,000 mm (30,0°) [ f/3,4 f=99,987 mm (30,0°) ]
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J.Petzval (version primitive de J.M. Eder)
Fermeture de trois diaphragmes. d=75µ |
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