Whiteymorange
Subscriber
Actually, Dan, I think you got it. Here, from http://www.photographyhistory.com/CS07/bellpanorama.html , is what I think is the lens and shutter combination I have:
Emphasis mine.Most importantly, the camera now came with several choices of more advanced Wollensak multispeed shutters, such as the Regno and Victo, and the accompanying Wollensak lenses were incrementally sharper than what preceded them. The basic Wollensak wide-angle symmetrical, with a maximum allowable diaphragm setting of f12, still suffered from slightly uneven exposure in the image corners if the aperture was too large, but a later more expensive option for the more demanding photographer was the outstanding Wollensak Velostigmat Wide Angle Series III. It boasted truly balanced exposure across the entire panoramic frame at its maximum aperture of f9.5, and that in turn translated to much faster and practical exposure times.