Steinheil Orthostigmat/Voigtlander Kollinear/Wray Platystigmat

[Ian Greenhalgh]

Apparently these three lenses share either an identical or almost identical prescription. However, I haven't been able to find what that prescription is, can anyone help?

The VM says the Wray Playstigmat covers 60 degrees wide open and 90 degrees at f32.

Has anyone used one of these three, how do they compare to a more modern wide angle?

[Dan Fromm]

Apparently these three lenses share either an identical or almost identical prescription. However, I haven't been able to find what that prescription is, can anyone help?

The VM says the Wray Playstigmat covers 60 degrees wide open and 90 degrees at f32.

Has anyone used one of these three, how do they compare to a more modern wide angle?

My, we're helpless today. http://www.dioptrique.info/base/m/m_steinheil.HTM http://www.dioptrique.info/OBJECTIFS14/00655/00655.HTM

The Orthostigmat isn't particularly wide angle. The Collinear is wider.

I quoted your original post so that you can't edit what you posted out of existence.