getting there
In my quest to find a cheap replacement of my Trioplan 2.8/100, I discovered another slide projector lens. The Rodenstrock--Splendar 2.8/100 with lenses made of glass in a steel tube (all others I had so far were made of plastic) seems to be a good choice. It has the same focal length as the Trioplan and is also Cooke triplet construction. A big difference is that the bubbles are getting ovoid when away from the center.
getting there
In my quest to find a cheap replacement of my Trioplan 2.8/100, I discovered another slide projector lens. The Rodenstrock--Splendar 2.8/100 with lenses made of glass in a steel tube (all others I had so far were made of plastic) seems to be a good choice. It has the same focal length as the Trioplan and is also Cooke triplet construction. A big difference is that the bubbles are getting ovoid when away from the center.