User manual METZ 36 AF-4P

[. . . ] Please return spent batteries to collecting points should they exist in your country!1 Power supply The flashgun can only be operated with 2 CR2type lithium batteries. This type of battery can be stored for many years with practically no loss of energy, thus making it ideal for occasional amateur flash photography.  Batteries have become discharged or spent When recycling takes more than 60 seconds. [. . . ] in other words: Without TTL flash control , the mecablitz fires an unmeasured flash at maximum output. If there is a flashgun integrated in the camera it must be switched off or completely folded down when the mecablitz is used. 2 Switching the flashgun on and off Set the main switch in the ON position to turn on the flashgun. The green flash-ready indicator lights up to indicate flash readiness. The mecablitz transmits different signals and messages to the camera when it is connected to the camera and is switched on. 1 Flash-ready indication The green light on the mecablitz illuminates when the flash capacitor is fully primed, thereby indicating flash readiness. 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. 2 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. Please refer to the camera's operating instructions to find out how the individual modes of synchronisation are set on the camera. With normal synchronisation, switching to the camera's flash sync shutter speed is automatic. The shutter speed may vary from 1/30th and 1/250th seconds, depending on the camera model. With normal synchronisation, the flash is fired precisely after the opening of the first shutter curtain. When using slow shutter speeds, and with moving objects, this would result in an unnatural rendition of light traces. With second curtain or rear curtain synchronisation, the flash is fired as the exposure is ending, just before the second curtain covers the film again. This makes the light trail behind the moving objects instead of appearing in front of them, and renders a more natural looking picture. 1 Use of flash in the program modes TTL-controlled flash shots can be made in all exposure and auto program modes. Once the mecablitz is attached to the camera and switched on, it automatically operates with TTL flash control in auto program (P), aperture priority (Av), shutter priority (Tv) and in the manual modes. Depth of field (DEP): The depth of field auto mode is not operative when the flashgun is switched on. Soft focusing (SF): The flash is only fired for the first exposure in the soft focusing mode. [. . . ] 6: Fill-in flash in daylight (left without, right with fill-in flash) Fill-in flash will soften harsh shadows and diminish the contrast, thereby producing a more balanced exposure when shooting against the light. The camera's computer-controlled measuring system automatically selects the shutter speed, working aperture and light output in such a manner that both the main subject in the foreground as well as the background are uniformly exposed. Your mecablitz provides full and even illumination of normal 24 x 36 mm negatives when using lenses of 35 mm focal length and longer. A wide-angle diffuser is supplied with the flashgun to increase the coverage if you wish to use a 28 mm wide-angle lens. [. . . ]