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Developed in 1840 by Joseph Petzval.
Etymology from Wiktionary, CC BY-SA 4.0.
Petzval lens
Today it means: A photographic lens consisting of two doublet lenses with an aperture stop in between. Full definition →
Today it means: A photographic lens consisting of two doublet lenses with an aperture stop in between. Full definition →
Developed in 1840 by Joseph Petzval.
Etymology from Wiktionary, CC BY-SA 4.0.