National Geographic : 1921 Nov
0 A Significant Fact When the United States Air Service wanted a super lens of microscopic definition for aerial photography, the organization that makes the Kodak Anastigmat found little difficulty in meeting the necessarily exacting requirements. And it is a significant fact that, due to the super-exactness of our optical equipment, the government inspectors availed themselves of the unusual facilities in our Research Laboratory even to the extent of using them to test lenses that were not of our manufacture. To the use of such equipment, equipment that detects the slightest error, is due the growing success of the Kodak Anastigmat lens. "About Lenses" is a little booklet that impartially describes all types of lenses. It will help you to a better understanding of your camera and this means better pictures. It's free - and we should be glad to send it to you. Th K ANA IG TS Eastman Kodak Company Rochester, N. Y. J77k~nY4. "Mention The Geographic-It identifies you"