Canon EOS 30D EOS 30D Instruction Manual - Page 103

Built-in Flash Range

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Using the Built-in Flash Built-in Flash Range With EF-S18-55mm f/3.5-5.6 ll ISO speed 100 200 400 800 1600 H: 3200 Wide angle: 18mm Approx. 1 - 3.7 / 3.3 - 12.1 Approx. 1 - 5.3 / 3.3 - 17.4 Approx. 1 - 7.4 / 3.3 - 24.3 Approx. 1 - 10.5 / 3.3 - 34.4 Approx. 1 - 14.9 / 3.3 - 48.9 Approx. 1 - 21.0 / 3.3 - 68.9 With EF-S17-85mm f/4-5.6 IS USM ISO speed 100 200 400 800 1600 H: 3200 Wide angle: 17mm Approx. 1 - 3.3 / 3.3 - 10.8 Approx. 1 - 4.6 / 3.3 - 15.1 Approx. 1 - 6.5 / 3.3 - 21.3 Approx. 1 - 9.2 / 3.3 - 30.2 Approx. 1 - 13.0 / 3.3 - 42.7 Approx. 1 - 18.4 / 3.3 - 60.4 [m / ft] Telephoto: 55mm Approx. 1 - 2.3 / 3.3 - 7.5 Approx. 1 - 3.3 / 3.3 - 10.8 Approx. 1 - 4.6 / 3.3 - 15.1 Approx. 1 - 6.6 / 3.3 - 21.7 Approx. 1 - 9.3 / 3.3 - 30.5 Approx. 1 - 13.1 / 3.3 - 43.0 [m / ft] Telephoto: 85mm Approx. 1 - 2.3 / 3.3 - 7.5 Approx. 1 - 3.3 / 3.3 - 10.8 Approx. 1 - 4.6 / 3.3 - 15.1 Approx. 1 - 6.6 / 3.3 - 21.7 Approx. 1 - 9.3 / 3.3 - 30.5 Approx. 1 - 13.1 / 3.3 - 43.0 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. When using the built-in flash, detach any hood attached to the lens. A lens hood will partially obstruct the flash. 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. To retract the flash, push it back down. In the modes, even if you set the shutter speed to one faster than 1/250 sec., it will be set automatically to 1/250 sec. If autofocus cannot be achieved, the AF-assist beam (small flashes fired by the built-in flash) will be fired automatically (except in the modes). (p.78) 103

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103
Using the Built-in Flash
Built-in Flash Range
With EF-S18-55mm f/3.5-5.6 ll
[m / ft]
ISO speed
Wide angle:
18mm
Telephoto:
55mm
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 / ft]
ISO speed
Wide angle: 17mm
Telephoto:
85mm
100
Approx. 1 - 3.3 / 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
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.
When using the built-in flash, detach any hood attached to the lens. A
lens hood will partially obstruct the flash.
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.
To retract the flash, push it back down.
In the <
s
> <
a
> modes, even if you set the shutter speed to one faster
than 1/250 sec., it will be set automatically to 1/250 sec.
If autofocus cannot be achieved, the AF-assist beam (small flashes fired
by the built-in flash) will be fired automatically (except in the <
3
> <
5
>
<
7
> modes). (p.78)