User manual METZ MECABLITZ 28 AF-4 C

[. . . ] Insert the flashgun base into the camera's accessory shoe and tighten by turning the knurled screw so that the flashgun cannot slip and fall out! ⷠIn the event of flash shots with full light output and short recycling times with a rechargeable NiCad battery, observe an interval of at least 3 minutes after a series of 20 flashes. ⷠNEVER place material that is impervious to light in front of, or directly on, the reflector screen. The high energy of the flash light will burn the material or damage the screen if this is not observed! [. . . ] No flash will be fired for the next shot if the mecablitz remains in this state on the camera. Setting the film speed on the mecablitz: Adjust the speed of the film loaded in the camera on the back of the flashgun by selecting the required value in the , , ISO Window" with the aperture slide. 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 orange 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 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 Most system cameras automatically change to flash sync speed when flash readiness is reached. The flash sync shutter speeds may vary between 1/30th and 1/250th second, depending on the camera model. 3) The green correct exposure light briefly illuminates when flash exposure was correct. Some cameras feature an incorrect exposure warning facility: A blinking stop value or shutter speed setting, or when both displays are blinking, indicates that the shot was either underexposed or overexposed In the event of incorrect exposure: 4 Information displayed in the camera's viewfinder blinks: Switch on the flash (on some cameras) illuminated: The flash is ready for use (on some cameras) Please refer to your camera's operating instructions to find out if this applies to your camera model. ⷠWith underexposure: Activate the flash or use a tripod and set a slower shutter speed!There can be different reasons for incorrect exposures within the different exposure and auto programs. Please refer to the camera's operating instructions to establish whatever applies to your camera. The mecablitz receives its information exclusively from the connected TTL-controlled camera. exposure measurement in TTL mode (TTL = throughthe-lens) is completed by the camera's sensor. This sensor measures the light reaching the film through the camera lens. An electronic control circuit within the camera transmits a stop signal to the flashgun as soon as the film has been exposed by the correct amount of light; the flash is then instantly cut out. The advantage of the TTL mode is that all factors influencing the exposure of the film (such as filters, change of aperture or variable aperture zooms) are taken into account. Spot , matrix or centre-weighted overall readings) offered by some cameras. [. . . ] AF operating modes Two operating modes are available with AF cameras (depending on the camera model): · Focusing priority (One-shot AF): The shutter can only be released when the subject has been sharply focused by the AF system. If the camera's AF system is unable to focus sharply, then the shutter cannot be released and the flash cannot be fired. ⷠShutter release priority (AI Servo AF): The shutter can always be tripped, irrespective of sharp focusing. Shots may be blurred if the release is actuated before focusing has been completed by the camera. [. . . ]