Meyer Optic Gorlitz Lydith 30mm 3.5 I have this screw lens from my Zenith E days & was surprised that it could be used with digital cameras. These go fairly cheap on Ebay etc Very tempted to buy a camera so I can use it but …. I’ll probably wait it out. I’ve seen photos taken with this mounted on Sony Nex & Fuji but Here is a link to Flickr group. Flickr: The Meyer-Optik Lydith 30/3.5 Pool and another manual lens | gimletsandfilm
