ack forgot to check in on this thread, super neat info, thanks everyone! (I may or may not have ordered a beat up Kodak Medalist cause it just seemed so charming...we'll see if it can be made to work...).
Dan is right about the Bessa 6x6, really difficult camera to get.
Another 5 elements folding camera is a Welta Weltur 6x6 or 6x4.5 where the lens is Xenar 75mm f/2.8 (unit focus).
ooo neat from what I understand the Welta Weltur Xenar is a case of a tessar design slightly modified to be faster? (at least judging by
https://www.photo.net/forums/topic/157803-when-xenon-is-a-xenar/?do=findComment&comment=1779711) That's neat!
If you want to get all, um, Jesuitical about it, the 5-element 105/3.7 Ektar was the optional top-of-the-line lens for 2x3 Pacemaker Graphics, both Speed and Crown. These cameras fold.
Technically, my Linhof Technika 70 folds with a 2.8/100mm Zeiss Planar ...
Oh hey, same. Except I got the Rodenstock Heliogon 100/2.8. Currently my Technica 70 is getting an expensive makeover at laflex but I look forward to trying it!
I would think the new ones (post 1970s) have lenses with more elements.
Of the classics, some voigtlanders had Heliar (5) or Ultron (6) lenses, and I think the Mamiya 6x6 Automat had a 5-6 element lens
Hoh, given that the Olympus lens was a D zuiko, I assumed most of the 6'es were 4 elements. I assumed the Mamiya Sekor was the same. Hadn't heard that maybe there was a more advanced lens?
Vitessa with Ultron (6 elements) is also a folder, but I dont know if the OP was interested only in 120 folders.
God, I need to get a Vitessa someday. Such a gorgeous camera. In the 35mm realm, I suppose the Kodak IIIc would count too. Mine has a Schneider 50mm Xenon C f/2 (which I assume is 5? or 6 elements and is an incredible lens for its age imo).
Had no idea about all this Ensign history. Tempted to get 1 when the budget improves. They seem really good cameras!
The folders I have got so far are:
Mamiya 6 ( a late but not automat version). Not sure about the lens, but (mine is the Setagaya Koki Sekor S which actually takes lovely photos).
Zeiss Super Ikon (a newer 6x6 and an older 6x4.5 both tessar)
Certo 6 (Tessar)
Franka 2 (3 element Rodenstock lens)
Bessa II (Color Heliar)
Plus two 6x6 Welta Welturs (one with the Trioplan, one with Tessar), both need some repair...(also one came with the 6x4.5 mask too which I assume is somewhat uncommon)