I am looking for info about Ernemann Eronstar lenses that are 18cm / 180mm / 7" or longer. As I have heard there are lenses up to 25cm / 10" with ƒ-stop 2.7 and I am interested to know if anyone has used those and what are the experiences.

I have since recently 18cm version & I am totally in love with it but I would love to acquire a longer one (22cm or 25cm) for usage with my modified Graflex RB Series D 4x5 camera and would love to hear more about them. Info about these lenses on the net is unfortunately non-existent and I don't own any book or printed source dealing with them.

Looking forward to hear your experiences.

Kind regards,