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Switching Flash Coverage
Flash head (normal position)
Flash head (pulled forward)
See p.26 for guidelines about the flash shooting range.
The Guide No. is 22/72 (ISO 100 in meters/feet). The
maximum flash coverage matches an EF 28mm wide
angle lens (EF-S 18mm).
The Guide No. is 27/89 (ISO 100 in meters/feet). The flash
coverage matches an EF 50mm (EF-S 32mm) or lenses
with longer focal length.
When shooting with a lens wider than EF 50mm (EF-S
32mm), the periphery of the picture may become dark.
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