This Zoom Projection Lens with a focal length of 4” to 6” and an aperture of f3.5 is perfect for Kodak Projection Ektanar Slide Projectors. It is made by Zoom, a reliable brand in the industry, and is compatible with Kodak slide projectors. The lens is designed to fit slide projectors and has not been modified. It is a non-domestic product made in Japan. The lens is ideal for those interested in projection photography and film photography. It is a type of lens that is compatible with slide projectors and has a zoom focal length. This lens is perfect for those who want to project their slides with ease and efficiency.