Panasonic AKHC930 - MULT FORMAT CAMERA Operating Instructions Manual

Contents

11Adjusting the lens flange backAdjust the flange back (distance from the surface where thelens is mounted to the surface where the images areformed) if the subject fails to be precisely focused at boththe telephoto and wide-angle settings when zoomoperations are to be performed.Once adjusted, the flange back does not need to beadjusted again unless the lens is replaced.Adjustment method1 Mount the lens on the camera. Do not forget to connectthe lens cable at this time.2 Set the lens iris to manual, and open the iris.3 Set the lighting in such a way that the appropriate videooutput level is obtained at a distance of about 10 ft (3meters) from the flange back adjustment chart.If the video level is too high, use a filter or shutter.4 Loosen the screw that secures the F.f (flange focus)ring.Depending on the lens concerned, this ring may bemarked as the “F.b” (flange back) ring.5 Set the zoom ring to the telephoto position either bymanual or electrical means.6 Shoot the flange back adjustment chart, and turn thedistance ring to adjust the focus.7 Set the zoom ring to the wide-angle position, and turnthe F.f ring to adjust the focus. Take care not to movethe distance ring.8 Repeat steps 5 to 7 until the chart is focused properly atboth the telephoto and wide-angle positions.9 Tighten up the screw that secures the F.f ring.For details on the adjustment method and positions of thelens parts, refer also to the instructions that accompany thelens.About 10 ft (3 m)