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Carl Dietzler in 1850 c. with the 15.8cm. lens. Collodium print.
02
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Carl Dietzler in Wien N°452 portrait lens. Front lens:6.7cm., Rear lens:7.1cm., Focal length: 24cm. c. Height:18cm.
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Photographischer Dialyt N°11 C. Dietzler et Comp. in Wien. 1856.

A short excerpt from the third chapter: Dietzler

... Carl Dietzler (?-1872) also built a folding camera with a double bellows that permitted him to mount the Photographischer Dialyt lens. The joint venture between Petzval and Dietzler was not limited to the Orthoskop but included production of the portrait lens, considered the best portrait lens available at the time. Petzval himself supervised production of the first 100 pieces. The best Vienna studios continued using the excellent Petzval-Dietzler lenses almost to the end of the century when they began to be sought as collector's items. Many pieces at that time found their way into Vienna's Graphische Lehr-und Versuchsanstalt collection. As the wet collodion process permitted larger plate formats, the best lens makers, as mentioned previously, began producing larger lenses...

Continue...

Footnotes:

...

The other Makers

Voigtländer
Petzval
Busch
Steinheil
Zeiss
Some Others

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