Ian Greenhalgh
4-Nov-2013, 02:28
Hi folks
I have been searching in vain for info on an f6.8 80mm Dagor, an uncoated German Goerz that looks like it dates from the early 1920s.
I know that Dagors coverage increases when stopped down, but what portion of the image circle is actually usable? I mean, are they like Angulons where the outer part of the image circle is quite soft?
Does anyone have any specific info on an 80mm f6.8 Dagor? I'm guessing it's for 9x12cm, but it's only a guess. If stopped down to, let's say f45, what might the coverage be?
I have been searching in vain for info on an f6.8 80mm Dagor, an uncoated German Goerz that looks like it dates from the early 1920s.
I know that Dagors coverage increases when stopped down, but what portion of the image circle is actually usable? I mean, are they like Angulons where the outer part of the image circle is quite soft?
Does anyone have any specific info on an 80mm f6.8 Dagor? I'm guessing it's for 9x12cm, but it's only a guess. If stopped down to, let's say f45, what might the coverage be?