Canon EOS 30D Instruction Manual page 103

Using the Built-in Flash
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Built-in Flash Range
With EF-S18-55mm f/3.5-5.6 II [m /
ttl
'.,
..
100 Approx. 1 - 3.7 / 3.3 - 12.1 Approx. 1 - 2.3/3.3 - 7.5
200 Approx.1 - 5.3/3.3 - 17.4
Approx. 1 - 3.3/3.3 - 10.8
400 Approx. 1 - 7.4/3.3 - 24.3
Approx. 1 - 4.6/3.3 - 15.1
800
Approx. 1 - 10.5/ 3.3 - 34.4 Approx. 1 - 6.6/ 3.3 - 21.7
1600 Approx. 1 -
14.9/3.3 -
48.9
Approx. 1 - 9.3/ 3.3 - 30.5
H:3200 Approx. 1 - 21.0 / 3.3 - 68.9 Approx. 1 - 13.1 / 3.3 - 43.0
With EF-S17-85mm f/4-5.6 IS USM [m /
ttl
»>
100 Approx. 1 - 3.3
1
3.3 - 10.8 Approx. 1 -
2.3/3.3 -
7.5
200 Approx. 1 - 4.6 /3.3 - 15.1 Approx. 1 - 3.3/3.3 - 10.8
400 Approx. 1 - 6.5 /3.3 - 21.3 Approx. 1 - 4.6 / 3.3 - 15.1
800 Approx. 1 - 9.2 /3.3 - 30.2 Approx. 1 - 6.6 /3.3 - 21.7
1600 Approx. 1 - 13.0 /3.3 - 42.7
Approx. 1 - 9.3 / 3.3 - 30.5
H:3200
Approx.1-18.4/3.3-60.4 Approx. 1 - 13.1 / 3.3 - 43.0
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Use the built-in flash at least 1
m/3.3 ft
away from the sUbject. Closer
distances will cause the lens barrel to partially obstruct the flash.
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When using the built-in flash, detach any hood attached to the lens. A
lens hood will partially obstruct the flash.
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A super telephoto lens or fast, large-aperture lens may partially obstruct
the built-in flash coverage. In such a case, using an EX-series Speedlite
(optional) is recommended.
$
The built-in flash's coverage is effective with lens focal lengths as short
as 17mm. If the lens is shorter than 17mm, the periphery of the flash
photo will look dark.
III
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To retract the flash, push it back down.
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In the
<
Tv
> <
M
> modes, even if you set the shutter speed to one faster
than 1/250 sec., it will be set automatically to 1/250 sec.
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If autofocus cannot be achieved, the AF-assist beam (small flashes fired
by the built-in flash) will be fired automatically (except in the <t&,>
<~>
<[D> modes). (p.78)
103
I