Okay, I keep looking for a nice Zeiss solid-body viewfinder camera. Thing is there are just too many lens types out there. Sometimes I think it be nice to get a Voigtlander Vito or something like that BUT the number of lens names is dizzying. Which one exactly, is supposed to be the equivalent of a four elements in three groups?
Wonder no longer. Here is a list of lens - you can figure which Schneider or Voigtlander design is the equivalent of whichever Zeiss design!
The Biotar lens I bought today would be six elements in four groups.
I used to be quite snobby about not wanting a three element lens on a vintage viewfinder and have consequently avoided them. However, my camera repair man Horst Wenzel - trained in Hasselblads and Leicas - says my triplet TLR, Yashica 635 with a Yashikor 80mm lens, will do fine even against the Yashinon found in the Yashicamat 124-G.
3. Voigtländer Vaskar 1:4,5
4. Steinheil Cassar 1:4,5; 1:3,5; 1:2,8
5. Schneider Radionar 1:4,5; 1:3,5; 1:2,9
6. Agfa Solinar l :4,5; 1:3,5; 1:2,8
7. Zeiss Tessar 1:3,5; 1:2,8
8. Schneider Xenar 1:3,5; 1:2,8
9. Voigtländer Color Skopar 1:3,5
10. Schneider Xenotar 1:2,8
11. Voigtländer Ultron 1:2,0
12. Rodenstock Heligon 1:2,0
13. Schneider Xenon 1:2,0; 1:1,9
14. Zeiss Biotar 1:2,0
15. Zeiss Sonnar 1:1,5
16. Voigtländer Nokton 1:1,5