KODAK AERO EKTAR 7 IN LENS. COVERS 5X5 INCHES. GOOD FOR 4 X 5. DON'T KNOW IF WOULD WORK ON 5 X 7. BLACK PAINT WORN OFF ON FRONT LENS HOUSING. FRONT LENS HAS PROLIFERATION OF TINY SCRATCHES. PROBABLY HAS A SOFTENING EFFECT ON PICTURES. REAR ELEMENT IS CLEAR IN CENTER BUT HAS SOME FUNGUS ON INNER EDGES. APERTURE CONTROL F 2.5 TO F 16 WORKS WELL.REAR ELEMENT HOUSING HAS DENT ON ONE SIDE. PROJECTED IMAGE ARE CLEAR. WILL PRODUCE GOOD IMAGES. DOES NOT HAVE FLANGE FOR ATTACHING TO LENSBOARD.