94Using Other Flash Units with the CameraAn external flash unit not designed for this camera can be connected to either the hotshoe or the synchro socket on the left side of the camera and used, provided that itmeets the conditions described below. However, please remember that a genericexternal flash unit, unlike the dedicated FL-40 flash unit, cannot be used to control theintensity of the flash.Requirements for other flash units used with this camera1. Use a flash unit with an angle of illumination wider than the range of the camera.The focal length of this camera is 35 mm~140 mm (1.3 in.~5.6 in.), calculated based on 35 mmfilm, and requires that the angle of illumination be wider than the focal length used. In order touse the full focal length area, over 35 mm is required. In order to bring into use the remainingportion of the illumination area, use an external flash with a wide adapter.2. When using full flash, set the flash timing shorter than 5ms.With a ring flash, or other flash unit with long flash duration, the shutter may close during theflash and part of the light might not be used in the exposure.3. Do not attempt to any flash unit (other than the FL-40) which employs electronic flashcontrol between the flash unit and the camera.Setting a non-dedicated flash unit1. Using auto flash (controlled by the external flash)The intensity of the flash must be adjusted with the controls on the flash unit. The f/stop and ISOsettings on the flash unit must match these settings on the camera. Depending on the shootingconditions, you may not be able to achieve satisfactory exposure. In this case, you will have toadjust the aperture values and ISO settings on both the camera and the external flash unit. Flashcontrol settings performed on the camera are ignored by the flash unit.2. If you want to set the guide number on the external flash, calculate the aperture valuefrom the guide number, camera-to-subject distance, and the ISO setting.Cautions about using external flash units other than the FL-40Even when is displayed, an external flash not designed for this camera may fire for every shot. Ifyou do not want the flash to fire, switch if off. If the flash continues to fire after the flash is switchedoff, disconnect the flash from the camera. Further, the intensity of such a flash must be controlled byadjustments on the external flash unit. The results in your pictures could differ, depending on theshooting conditions, type of external flash unit used, and the camera settings. Please understandthat we cannot guarantee the performance of the camera and picture quality when a flash unit notdesigned for this camera is used.
