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Five Heliar designs by F. E. Altman

Recognizable in this group are the basis for the 100mm f/3.5 Ektar used on the Kodak Medalist and the 35mm f/3.3 Ektar Wide Angle lens for the Kodak Ektra.

Source: Rudolf Kingslake, A History of the Photographic Lens, 1989



	Five Heliar designs by F. E. Altman Recognizable in this group are the basis for the 100mm f/3.5 Ektar used on the Kodak Medalist and the 35mm f/3.3 Ektar Wide Angle lens for the Kodak Ektra. *Source: Rudolf Kingslake, A History of the Photographic Lens, 1989*