Just when Karl, Johnny, and Simon started to think they knew about lenses, Jason Lane comes along and makes them realize how little they actually know. Why does a Petzval swirl? Why do new high resolution lenses have a gazillion elements? Why is field of view is more important than focal length to a designer? These, and many more questions, are answered in this highly technical episode. Plus, the latest news on glass plate photography! ________ LISTEN TO THE PODCAST  Pobean | iTunes | Stitcher ________ Jason Lane Pictoriographica, home of J. Lane Dry Plates | Instagram LINKS Photographic Lens Design Photographic Dry Plates Dioptrique Photographique Zemax OpticStudio College of Optical Sciences, The University of Arizona Patents by Paul Rudolph Prof. Jose Sasian: Tessar and Dagor Lenses Oldlens.com ________ SUPPORT THE PODCAST  Donate on Ko-fi CONTACT Send ideas & questions for the podcast EMAIL LIST Sign-up to receive an email when each podcast goes live INSTAGRAM  BestVintageLens | #classiclenses | #bestvintagelens FOLLOW THE HOSTS  Karl Havens Flickr | Instagram Johnny Sisson Instagram | Central Camera Company Simon Forster Website | Ebay | Flickr | Facebook | Instagram | Twitter | LFPP PODCAST THEME  Octoblues Royalty Free Music by Kevin Macleod

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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