Never heard of an 80mm Ultragon but one has popped up recently on German ebay... Looks to be in a Technika 5x7 III board...
Anyone know if Arne Cröll is still around? Seems like something he might know about...
Never heard of an 80mm Ultragon but one has popped up recently on German ebay... Looks to be in a Technika 5x7 III board...
Anyone know if Arne Cröll is still around? Seems like something he might know about...
Last edited by Embdude; 5-Mar-2023 at 14:14.
https://spiral-m42.blogspot.com/2023...ragon.html?m=1
This site in Japanese would help.
Use Google translator or the browser translation function to translate to English.
It says 80mm was made as prototype.
Is there any serial number on the lens?
If so, it might be on the Thiele’s book.
The same thing is mentioned in Arne’s paper on p16.
https://www.arnecroell.com/voigtlaender.pdf
Thanks mhayashi according to the site "Voigtlander Ultragon 4.5/80mm Lens #3535431 in Synchro Compur-P Shutter" The sn is on the outside of the front cell and kinda hard to read in the photos.
https://www.ebay.de/itm/325155265651...=&toolid=10050
I contacted Makino who runs the website you suggested. He says he is interested in the lens and as luck has it he is selling his own Ultragon 60mm prototype lens... https://page.auctions.yahoo.co.jp/jp...on/x1083943543Originally Posted by mhayashi
2 Prototype Ultragons available at the same time wow...
Oh yes, he seems to like to do catch and release.
He likes to study rather than collect lenses.
I think that board is an older Tech II 4x5 board.
Never heard of an 80mm Ultragon but one has popped up recently on German ebay... Looks to be in a Technika 5x7 III board...
Anyone know if Arne Cröll is still around? Seems like something he might know about...
yeah I guess the lens/shutter is smaller than I first thought if it is a 4x5 board
Very interesting. I have saved Arne's document with the patent number for the Ultragon. I'm interested to see what this looks like, and see if I can analyse the patent.
The US Patent number for the 115mm Ultragon is 2,670,659 not 2,670,649 as per Arne's reference no.24.
Sadly I don't think Arne is around here anymore...
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