Show Camera Lenses Wanted I. I Th The p United ltd States signal corps has Issued nn an appeal to the owners of all aU high grade high cam The The signal corps nr the lenses of their machines forwar forwar for forwar war work worl It that the Unit Unit- States ed-States d. d States bureau of ot standards has i solved sol the problem of manufacturing high-grade high optical glass for aircraft camera lenses but apparently the they be produced In quantity Q fast h to equip our our fleet of airplanes The United States has always been a n great for amateur lr ph photographers t find and there le are a n large number of high- high grade made European len lenses es scattered about the conn country try These lenses the signal corps corps wants to bu buy Long focus focus focus fo fo- fo- fo cus lenses working orling at large apertures are the only kind kind which can be used |