Post-WW II lenses, irrelevant to this discussion. And yes, I enjoy thread drift as much as the next person.
Printable View
4/4 double Gauss would be Wide Field Ektar and related?
Never heard of Perigraphe VIa, if curious enough, might give it a try. Then agin, there is not that much motivation to do so.
Performance at large apertures would be exampled by the 75mm f4.5 Biogon and related. Trade off being size-weight of the lens. Speaking of better performance at age apertures, it is claimed by Rodenstock the 35mm, 45mm, 55mm APO grandagon has good performance at f8 or so ?
Bernice
Um...the Protar V, from about 1891 I believe.
https://live.staticflickr.com/4036/4...9f21b089_o.jpg
Well, it depends on if you look at the front or at the rear section.
Of course I'm an amateur and Kingslake wasn't it at all, but if the 1951 kept the same name it had to be because the rear sections had the same concept.
Both designs have a lot in common in the rear section, the 1951 design adds a cemented element, but the concept it's very close:
Attachment 194496
Possibly (guessing) the added cemented element was to balance the pupil tilting introduced in the front section. So beyond comparisson with Sonnar/Aviotar to me both designs (34-51) have the rear section concept in common.
:)
If you compare complete lenses then later Biogons are also completely different to the 1951 one:
Attachment 194502
Attachment 194503
Then add all derivatives around...
See the Super Angulons...
The question is: what makes a design be a biogon derivative ?
If you can tolerate Google Translate from Italian (or you know Italian), Marco Cavina's article on the history of Zeiss symmetrical wide angle design is a good read:
http://www.marcocavina.com/articoli_...gon/00_pag.htm
https://translate.google.com/transla...n%2F00_pag.htm
The Petzval Orthoscop was designed as a wider-angle "View Lens" along side Petzval's "Portrait Lens" in 1839, but wasn't manufactured until 1856-'58. (Early photographers were mostly interested in portraiture.) It was manufactured by Dietzler (under Petzval himself), Voigtlander, Ross, CC Harrison, and probably a few others.
The Harrison & Schnitzer Globe Lens was even wider angle, and came out in 1862-'63.
Busch's Pantoscope followed that in 1865, then came Dallmeyer's Wide Angle Rectilinears in 1866. The WAR's were copied and improved by many manufacturers, and were quite popular through the rest of the century. They're still fairly common, fairly cheap, and perform rather well.
I'd say the last noteworthy "vintage" wide angles were the Zeiss Protar Series V and the Goerz Dopple Anastigmat (Dagor), which occupy the space between vintage and modern wide angles.
And then there are the exotics like the Hypergon...