Canon Speedlite 580EX II - Manual (Page 55)

54
Guide No. (at ISO 100, in meters/feet)
Normal Flash (Full Output) and Quick Flash
Flash Coverage
(mm)
14 24 28 35 50 70 80 105
Normal Flash
(Full output) 15/
49.2
28/
91.9
30/
98.4
36/
118.1
42/
137.8
50/
164
53/
173.9
58/
190.3
Quick Flash Same as 1/2 to 1/6 manual flash output
Manual Flash
Flash Output
Flash Coverage (mm)
14 24 28 35 50 70 80 105
1/1
15/
49.2
28/
91.9
30/
98.4
36/
118.1
42/
137.8
50/
164
53/
173.9
58/
190.3
1/2
10.6/
34.8
19.8/
65
21.2/
69.6
25.5/
83.7
29.7/
97.4
35.4/
116.1
37.5/
123
41/
134.5
1/4
7.5/
24.6
14/
45.9
15/
49.2
18/
59.1
21/
68.9
25/
82
26.5/
86.9
29/
95.1
1/8
5.3/
17.4
9.9/
32.5
10.6/
34.8
12.7/
41.7
14.8/
48.6
17.7/
58.1
18.7/
61.4
20.5/
67.3
1/16
3.8/
12.5
7/
23
7.5/
24.6
9/
29.5
10.5/
34.4
12.5/
41
13.3/
43.6
14.5/
47.6
1/32
2.7/
8.9
4.9/
16.1
5.3/
17.4
6.4/
21
7.4/
24.3
8.8/
28.9
9.4/
30.8
10.3/
33.8
1/64
1.9/
6.2
3.5/
11.5
3.8/
12.5
4.5/
14.8
5.3/
17.4
6.3/
20.7
6.6/
21.7
7.3/
24
1/128
1.3/
4.3
2.5/
8.2
2.7/
8.9
3.2/
10.5
3.7/
12.1
4.4/
14.4
4.7/
15.4
5.1/
16.7
A65_04.fm Page 54 Thursday, November 23, 2006 1:28 PM
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