Aplanat, lens corrected to minimize chromatic and spherical aberrations even at a wide aperture. Hugo Adolph von Steinheil (1832-93) is credited with having introduced the first one in 1866.
— Robin Lenman
aplanat
Did you mean: aplanat (photography), Rapid Rectilinear
| Photography Encyclopedia: aplanat |
Did you mean: aplanat (photography), Rapid Rectilinear
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 | John Henry Dallmeyer (photography) |
| Carl August von Steinheil (photography) |
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