Metz mecablitz 64 AF-1 digital Mode D'emploi page 213

The setting for manual TTL flash exposure correction has no effect
• The camera does not support manual TTL flash exposure
correction on the flash uni.
Automatic switching to the flash sync speed fails to occur
• The camera has a between-the-lens shutter (as do most compact
cameras),
Switching to sync speed is therefore unnecessary.
• The camera operates with high-speed synchronisation HSS
(camera settings). Switching to sync speed does not occur in the
process.
• The camera operates with shutter speeds that are slower than
the flash sync speed. Depending on the camera mode, there is
no switch to flash sync speed (see the camera's operating
instructions).
The shots are too dark
• The subject is beyond the range of the flash unit.
Note: Using bounce flash reduces the range of the flash unit.
• The subject contains very bright or highly reflective areas.
The metering system of the camera or flash unit is deceived as a
result. Set a positive manual flash exposure correction, e.g., +1 EV.
The shots are too bright
• In close-up shots, overexposure (shots that are too bright) may
result if the shutter speed is faster than the flash sync speed.
The aperture (f-stop) cannot be adjusted on the flash unit
• There is an exchange of digital data between the flash unit and
camera. Adjustment of the aperture is not possible!
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