Petzval lens
English
editEtymology
editDeveloped in 1840 by Joseph Petzval.
Noun
editPetzval lens (plural Petzval lenses)
- (historical) A photographic lens consisting of two doublet lenses with an aperture stop in between.
Developed in 1840 by Joseph Petzval.
Petzval lens (plural Petzval lenses)