Metz MECABLITZ 20 C-2 - Manual (Page 73)

Ensure that the camera’s shutter speed equals
or is slower than the camera’s flash sync
speed (see operating instructions for the given
camera).
Example:
Established aperture = f/8;
established shutter speed = 1/60 s
Flash sync speed of the camera = 1/100th
sec.
(see operating instructions for the given
camera).
The two established values for aperture and
shutter speed can be set on the camera becau-
se the camera’s shutter speed is slower than
the camera’s flash sync speed.
To maintain a balanced range of highlights,
for instance in order to retain the character of
the shadows, the auto aperture selected on the
flash unit should be one setting lower than the
f-number set on the camera. In our example
f/8 was selected on the camera. Consequently,
we advise you to set an auto aperture of f/5.6
on the flash.
Ensure that the source of backlight does
not shine directly into the sensor of the
flash unit as this would confuse the elec-
tronic system and falsify the reading.
7.2 Flash exposure correction
The automatic flash exposure system of the flash
is based on a 25 % reflectivity of the subject
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705 47 0068.A1 31.01.2006 13:45 Uhr Seite 73