The flash exposure is underexposed or overexposed.
• You used high-speed sync.
-
With high-speed sync, the effective flash range will be shorter. Make sure
the subject is within the effective flash range displayed.
• You used Manual Flash mode.
-
Set the flash mode to TTL or modify the flash output.
Photos have dark corners or only parts of the target subject are
illuminated.
• The focal length of lens exceeds the flash coverage.
-
Check the flash coverage you set. This flash unit has the flash coverage
between 24 and 105 mm, which fits medium-format cameras. Pull the wide
panel out to extend the flash coverage.
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