Canon EOS 70DN Basic Instruction Manual page 353

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Effective Range of Built-in Flash

When you use the built-in flash, detach any lens hood and keep at least

1 meter/3 3 feet away from the subject.

If the lens has a hood attached or if you are too close to the subject, the

bottom of the picture might look dark due to the obstructed flash.

If you use a super telephoto lens or large-aperture lens and the bottom of

the picture looks dark, using an external Speedlite (sold separately, p.193) is

recommended.

EF-S18-55mm f/3.5-5.6 IS STM

EF-S18-135mm f/3.5-5.6 IS STM

EF-S18-200mm f/3.5-5.6 IS

Wide Angle: f/3.5

1-3.4/3.3-11.2

1-4.8/3.3-15.9

1-6.9/3.3-22.5

1 2-9.7/4.0-31.8

1.7-13.7/5.6-45.0

2.4-19.4/8.0-63.6

3.4-27.4/11.2-90.0

4.8-38.8/15.9-127.3

6.9-54.9/22.5-180.0

D Using the Built-in Flash

[Approx. in meters/feet]

Telephoto: f/5.6

1-2.1/3 3-7.0

1-3.0/3 3-9.9

1-4.3/3.3-14.1

1-6.1/3.3-19 9

1.1-8.6/3 5-28.1

1.5-12.1/5.0-39.8

2.1-17.1/7.0-56.2

3.0-24.2/9.9-79.5

4.3-34.3/14.1-112.5

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