109
Specifications
Guide Number
(ISO 100, in approx. meters/feet)
Normal Flash (Full Output)/Quick Flash
Flash Coverage (mm)
14
24
28
35
Normal Flash (Full Output)
14.0 / 45.9 25.0 / 82.0 26.0 / 85.3 29.0 / 95.1
Quick Flash
Equivalent to approx. 1/2 - 1/6 of full output
Flash Coverage (mm)
50
70
80
105
Normal Flash (Full Output)
33.0 / 108.3 40.0 / 131.2 42.0 / 137.8 47.0 / 154.2
Quick Flash
Equivalent to approx. 1/2 - 1/6 of full output
Manual Flash
Flash Output
Flash Coverage (mm)
14
24
28
35
1/1
14.0 / 45.9
25.0 / 82.0
26.0 / 85.3
29.0 / 95.1
1/2
9.9 / 32.5
17.7 / 58.1
18.4 / 60.4
20.5 / 67.3
1/4
7.0 / 23.0
12.5 / 41.0
13.0 / 42.7
14.5 / 47.6
1/8
4.9 / 16.1
8.8 / 28.9
9.2 / 30.2
10.3 / 33.8
1/16
3.5 / 11.5
6.3 / 20.7
6.5 / 21.3
7.3 / 24.0
1/32
2.5 / 8.2
4.4 / 14.4
4.6 / 15.1
5.1 / 16.7
1/64
1.8 / 5.9
3.1 / 10.2
3.3 / 10.8
3.6 / 11.8
1/128
1.2 / 3.9
2.2 / 7.2
2.3 / 7.5
2.6 / 8.5
Flash Output
Flash Coverage (mm)
50
70
80
105
1/1
33.0 / 108.3
40.0 / 131.2
42.0 / 137.8
47.0 / 154.2
1/2
23.3 / 76.4
28.3 / 92.8
29.7 / 97.4
33.2 / 108.9
1/4
16.5 / 54.1
20.0 / 65.6
21.0 / 68.9
23.5 / 77.1
1/8
11.7 / 38.4
14.1 / 46.3
14.8 / 48.6
16.6 / 54.5
1/16
8.3 / 27.2
10.0 / 32.8
10.5 / 34.4
11.8 / 38.7
1/32
5.8 / 19.0
7.1 / 23.3
7.4 / 24.3
8.3 / 27.2
1/64
4.1 / 13.5
5.0 / 16.4
5.3 / 17.4
5.9 / 19.4
1/128
2.9 / 9.5
3.5 / 11.5
3.7 / 12.1
4.2 / 13.8
Summary of Contents for Speedlite 470EX-AI
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