A range of superb new lenses
As is true of the rest of the camera, the lenses are entirely new--in formula, in mounting, and in many aspects of their focusing and general use. All were computed and designed specifically as component parts of the Ektra, and as members of a group of lenses whose combined ranges would complement each other in a wide, related series of magnifications. Kodak lens scientists, working with the designers of the camera proper, took into account not only the size and other specifications, but also the means for effectively coordinating the lenses with both the range-finder and view-finder systems. And these lens designers, and the craftsmen who executed their designs, had constantly before them the standards of accuracy, workmanship, and performance specified for the camera as a whole. The resulting family of Kodak Ektars challenges comparison with any other group of lenses. Their design embodies to a high degree all of the corrections essential for fine photography, and especially important for precision miniature work. Because of the growing importance of full-color photography, particular attention has been given to both lateral and longitudinal color correction.*

Surface treatment
The inner surfaces of the lenses are treated by coating process that improves the clarity and brilliance of the negatives obtained. This surface-coating process, forms of which have been widely publicized, reduces reflections from the sur-

*The fault known as "lateral color," or chromatic difference of magnification, results in objectionable color fringes along the edges of a color picture. "Longitudinal color," caused by the registering of different colors in planes other than the true focal plane, results in fuzziness. Lenses for the Ektra have excellent correction for both of these faults.