Especially in large format petzval and similar lenses eg https://www.flickr.com/photos/richard314159/galleries/72157624453174055/ https://www.flickr.com/photos/

Especially in large format petzval and similar lenses eg https://www.flickr.com/photos/richard314159/galleries/72157624453174055/ https://www.flickr.com/photos/richard314159/galleries/721576...