File:Petzval.png

DescriptionPetzval.png English: Petzval lens. Magyar: Petzval objektív Date 10 July 2009 Source Own work by uploader - Lens Photo by Андрей АМ Author Szőcs

DescriptionPetzval portréobjektív.png Magyar: Petzval portréobjektív Date 18 July 2009 Source Own work Author Szőcs Tamás

https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Petzval Portrait Lens (1840)

DescriptionPetzval curvature.png 中文（中国大陆）：佩兹瓦尔场曲 Date 19 July 2014, 19:36:54 Source Own work Author YOng

DescriptionPetzval-féle ortoszkóp.png Magyar: Petzval-féle ortoszkóp Date 18 July 2009 Source Own work Author Szőcs Tamás