Metz mecablitz 52 AF-1 Canon digital Manual De Instrucciones página 189

The synchronisation of the second curtain (REAR) cannot be set on
the flash unit
• Data transfer has not occurred between the flash unit and the
camera.
Actuate shutter release.
• The camera does not support REAR flash mode.
• The flash unit is set to automatic high-speed synchronisation HSS.
Deactivate HSS (see 7.4).
The setting for manual TTL flash exposure correction has no effect
• The camera does not support manual TTL flash exposure
correction on the flash unit.
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 minimum distance from the subject should be at least 10% of
the maximum flash range indicated on the display.
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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