Canon EOS 30D Instruction Manual

103

Using the Built-in Flash

With EF-S18-55mm f/3.5-5.6 ll

[m / ft]

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]

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)