http://www.cnbeta.com/articles/246072.htm
1840 年,维也纳大学的数学教授 Joseph Petzval 教授发明了光学成像镜头,后人将这种镜头称为 Petzval 镜头,19 世纪下半叶的许多经典相片都出自这种镜头。现在国外 Lomography 相机爱好者社区有部分复古爱好者对 Petzval 镜头进行重新设计,并将它应用在今天的佳能和尼康单反上,重获新生的镜头所拍摄的相片美到令人窒息。


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