Petzval lens

[1] It was developed by the Slovak mathematics professor Joseph Petzval in 1840 in Vienna,[2] with technical advice provided by Peter Wilhelm Friedrich von Voigtländer [de].

Petzval's lens established two new features: firstly, it was faster compared to previous lenses, with a maximum aperture of 1:3.6.

By 1845, Petzval's collaboration with Voigtländer, who held the license to produce the lenses, had become "mired in disputes".

[4] In 2013, Lomography successfully launched a crowdfunding campaign at kickstarter.com to produce a new Petzval lens in Russia for film and digital cameras.

[7] In 2019 TLS rehoused the Lomography lens for use on professional cinema cameras using th PL mount.