Portrait Objective Lens

Some articles on portrait, objective, portrait objective lens, objective lens:

Joseph Petzval - Discoveries and Inventions - Optics
... in that it required exposure times as long as 30 minutes to create a portrait ... in Vienna and, after six months of complex computations, produced designs for improved objective lenses for both portraiture and landscape photography ... Petzval's portrait objective lens (Petzval Porträtobjektiv) was an almost distortionless Anachromatischer vierlinser (double achromatic objective lens, with four lenses in three groups) ...

Famous quotes containing the words portrait and/or objective:

    I had rather see the portrait of a dog that I know, than all the allegorical paintings they can show me in the world.
    Samuel Johnson (1709–1784)

    When you’re dealing with monkeys, you’ve got to expect some wrenches.
    Alvah Bessie, Ranald MacDougall, and Lester Cole. Raoul Walsh. Captain Nelson, Objective Burma, giving a subaltern a mission (1945)