Canon Speedlite 430EX III-RT Instruction Manual - Page 101

Guide Number, Normal Flash Full Output/Quick Flash, Manual Flash

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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 22.0 / 72.2 24.0 / 78.7 28.0 / 91.9 Quick Flash Same as approx. 1/2 - 1/3 of full output Flash Coverage (mm) 50 70 80 105 Normal Flash (Full Output) 33.0 / 108.3 40.0 / 131.2 41.0 / 134.5 43.0 / 141.1 Quick Flash Same as approx. 1/2 - 1/3 of full output Manual Flash Flash Output 1/1 1/2 1/4 1/8 1/16 1/32 1/64 1/128 Flash Output 1/1 1/2 1/4 1/8 1/16 1/32 1/64 1/128 14 14.0 / 45.9 9.9 / 32.5 7.0 / 23.0 5.0 / 16.4 3.5 / 11.5 2.5 / 8.2 1.8 / 5.9 1.2 / 3.9 Flash Coverage (mm) 24 28 22.0 / 72.2 24.0 / 78.7 15.6 / 51.2 17.0 / 55.8 11.0 / 36.1 12.0 / 39.4 7.8 / 25.6 8.5 / 27.9 5.5 / 18.0 6.0 / 19.7 3.9 / 12.8 4.2 / 13.8 2.8 / 9.2 3.0 / 9.8 1.9 / 6.2 2.1 / 6.9 35 28.0 / 91.9 19.8 / 65.0 14.0 / 45.9 9.9 / 32.5 7.0 / 23.0 5.0 / 16.4 3.5 / 11.5 2.5 / 8.2 Flash Coverage (mm) 50 70 80 105 33.0 / 108.3 40.0 / 131.2 41.0 / 134.5 43.0 / 141.1 23.3 / 76.4 28.3 / 92.8 29.0 / 95.1 30.4 / 99.7 16.5 / 54.1 20.0 / 65.6 20.5 / 67.3 21.5 / 70.5 11.7 / 38.4 14.1 / 46.3 14.5 / 47.6 15.2 / 49.9 8.3 / 27.2 10.0 / 32.8 10.3 / 33.8 10.8 / 35.4 5.8 / 19.0 7.1 / 23.3 7.3 / 24.0 7.6 / 24.9 4.1 / 13.5 5.0 / 16.4 5.1 / 16.7 5.4 / 17.7 2.9 / 9.5 3.5 / 11.5 3.6 / 11.8 3.8 / 12.5 101

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101
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
22.0 / 72.2
24.0 / 78.7
28.0 / 91.9
Quick Flash
Same as approx. 1/2 - 1/3 of full output
Flash Coverage (mm)
50
70
80
105
Normal Flash (Full Output)
33.0 / 108.3
40.0 / 131.2
41.0 / 134.5
43.0 / 141.1
Quick Flash
Same as approx. 1/2 - 1/3 of full output
Manual Flash
Flash Output
Flash Coverage (mm)
14
24
28
35
1/1
14.0 / 45.9
22.0 / 72.2
24.0 / 78.7
28.0 / 91.9
1/2
9.9 / 32.5
15.6 / 51.2
17.0 / 55.8
19.8 / 65.0
1/4
7.0 / 23.0
11.0 / 36.1
12.0 / 39.4
14.0 / 45.9
1/8
5.0 / 16.4
7.8 / 25.6
8.5 / 27.9
9.9 / 32.5
1/16
3.5 / 11.5
5.5 / 18.0
6.0 / 19.7
7.0 / 23.0
1/32
2.5 / 8.2
3.9 / 12.8
4.2 / 13.8
5.0 / 16.4
1/64
1.8 / 5.9
2.8 / 9.2
3.0 / 9.8
3.5 / 11.5
1/128
1.2 / 3.9
1.9 / 6.2
2.1 / 6.9
2.5 / 8.2
Flash Output
Flash Coverage (mm)
50
70
80
105
1/1
33.0 / 108.3
40.0 / 131.2
41.0 / 134.5
43.0 / 141.1
1/2
23.3 / 76.4
28.3 / 92.8
29.0 / 95.1
30.4 / 99.7
1/4
16.5 / 54.1
20.0 / 65.6
20.5 / 67.3
21.5 / 70.5
1/8
11.7 / 38.4
14.1 / 46.3
14.5 / 47.6
15.2 / 49.9
1/16
8.3 / 27.2
10.0 / 32.8
10.3 / 33.8
10.8 / 35.4
1/32
5.8 / 19.0
7.1 / 23.3
7.3 / 24.0
7.6 / 24.9
1/64
4.1 / 13.5
5.0 / 16.4
5.1 / 16.7
5.4 / 17.7
1/128
2.9 / 9.5
3.5 / 11.5
3.6 / 11.8
3.8 / 12.5