Panasonic ET-ELW22 Operating Instructions Manual

Contents

Panasonic ET-ELW22 Operating Instructions Manual Manual pdf 6 page image

6-ENGLISHAdjusting the Focal BalanceThe focal balance between the center and periphery of the projected image changesdepending on the size of the projected image.The lens is equipped with a focus balance adjustment function for the screen periphery.■ Procedure for adjusting the focal balance1) Focus the center of the screen byoperating the projector unit.2) Turn the periphery focus ring byhand as shown in the figure toadjust the focus in the peripheryof the screen.Notez The projected image sizes and scale shown on the periphery focus adjustment ring are anapproximate guide.Making AdjustmentsPeriphery focus adjustment ringCorrecting the FocusWhen the projection lens is attached to the projector and images are being projectedonto the screen, the peripheral focus may be out of focus in some localized areas.In such cases, use the supplied spacers to correct the focus of these areas, and performadjustments so that the entire image is even.■ Relationship between lens orientation and screen focusIf the projection lens is tilted with respect to the plane of the screen, uneven focus willresult. For example, when the front side of the lens (screen side) is tilted downward asshown in the figure below (direction of the dotted arrow), the upper part of the screenwill be tilted backward and the lower part of the screen will be tilted forward.Projection lensImage formation surfaceScreen surface versus focal point