Kodak 100 to 150 mm f/3.5 Flat Field Zoom Projection Lens for Kodak Carousel or Ektagraphic Slide Projector.
This Kodak Slide Projection FF lens has an aperture of f/3.5 and a zoom range of 100-150mm. Its 153 millimeters in length, weighs only 310 grams, and gives you a field angle of 24 to 16. This lens provides a cost-effective alternative for professional or general-purpose slide presentations.