Dagor design? dagor clone?

[Struan Gray]

I am looking for something for ULF, Big and cheap dagot type lens.

The original brass Dagors from Goerz often go for surprisingly low prices on eBay.de. I've seen several 480 mm and even a 600 mm sell for a couple of hundred Euros. Oddly, knockoffs like the Collinears seem to fetch more. The 4-lens Suter anastigmats barely attract a single bid.

[Ole Tjugen]

Struan, neither the Collinear nor the Suter 4+4 Anastigmat is a Dagor "knockoff". Nor are the O Simon Hexanar and Octanar.

The Zeiss Doppel-protar Ser. IV (as sold in Germany, not the US version) however...

[Struan Gray]

Fair enough, but they'll do well as dagor substitutes on ULF.