User manual METZ MECABLITZ 40 AF-4

[. . . ] Dear Customer, We thank you for your confidence in our mecablitz MB 40 AF-4 N. the MB 40 AF-4 N flashgun has been especially designed for Nikon AF system cameras. IMPORTANT: Never mount the flashgun in the accessory shoe of any other system camera, otherwise the flashgun's foot or the camera's accessory shoe can be destroyed! the dedicated contacts in the foot only support the controlling commands of Nikon AF system cameras. [. . . ] Illumination of LC display Lightly tapping the LIGHT key LC display for about 10 sec. Automatic motor-zoom reflector control If you are using lenses which transmit their focal length to the camera, the camera will pass on this information to the flashgun. The flashgun then automatically adjusts the position of its zoom reflector to the focal length of the lens.  Automatic motor-zoom reflector control is only possible with cameras permitting digital data transmission to the flashgun. The following zoom positions of the reflector are possible: 28 mm/35 mm/50 mm and 80 mm. the adjusted zoom reflector position is indicated in the LC display (C). If a focal length shorter than 28 mm is used, the LC display (C) indicates an "F" to signalize danger of vignetting. When the flashgun is switched on with the main switch the activated zoom reflector position is always A. As soon as the camera's shutter release is lightly touched, the focal length of Manual motor-zoom reflector control The ZOOM key permits you to change the zoom reflector's position independently of the focal length of the lens. By lightly tapping the ZOOM key you can select the zoom positions in the following sequence: M. ZOOM mode no warning is given if the focal length of the lens is shorter than the focal length of the zoom reflector. The mecablitz transmits different signals and messages to the camera when it is connected to the camera and is switched on. flash-ready indication When the flash capacitor is charged , the "READY" lamp on the mecablitz lights up to signal flash readiness. This means that the next picture can be taken with flash. This means that flash can be used for the next exposure. the flash readiness signal is transmitted to the camera where it is indicated by a corresponding display in the camera's viewfinder. On some cameras (depending on the operating mode and camera model) the shutter is automatically changed to flash sync speed when flash readiness is reached. The flash will not be fired if the shutter is released before the flash ready light illuminates with the result that the exposure may be incorrect if the camera control circuit has already changed over to flash sync speed. Automatic flash sync speed control When the flash unit is on, the camera will automatically switch it to flash sync speed from any operating mode selected. The sync speed depends on the camera model and usually ranges between 1/30 sec. Some camera models will, when the flash unit is on, switch it to flash sync speed as soon as program mode , , P" or full-auto mode is selected. Speeds faster than the flash sync speed cannot be set. [. . . ] In most cases, it will only support the SINGLE-AF function (see camera's operating instructions) without follow-up focusing. ⷠThe range of the autofocus measuring flash depends on the speed of the lens (maximum aperture)!Depending on the camera type, either the AF illuminator of the camera or that of the flashgun will be activated whenever the autofocus measuring facility becomes necessary. AF operating modes Two operating modes are available with AF cameras (depending on the camera model): · Focusing priority (SINGLE AF): The shutter can only be released when the subject has been sharply focused by the AF system. [. . . ]