Cop y, Guide number (iso 100 in meters/feet) – Canon Speedlite 600EX-RT User Manual
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Specifications
Guide Number (ISO 100 in meters/feet)
Normal Flash (Full Output)/Quick Flash
Flash Coverage (mm)
14
20
24
28
35
50
Normal Flash (Full Output) 15/49.2 26/85.3 28/91.9 30/98.4 36/118.1 42/137.8
Quick Flash
Same as 1/2 to 1/6 of manual flash
Flash Coverage (mm)
70
80
105
135
200
Normal Flash (Full Output) 50/164 53/173.9 58/190.3 59/193.6 60/196.9
Quick Flash
Same as 1/2 to 1/6 of manual flash
Manual Flash
Flash Output
Flash Coverage (mm)
14
20
24
28
35
50
1/1
15/49.2
26/85.3
28/91.9
30/98.4
36/118.1 42/137.8
1/2
10.6/34.8 18.4/60.4
19.8/65
21.2/69.6 25.5/83.7 29.7/97.4
1/4
7.5/24.6
13/42.7
14/45.9
15/49.2
18/59.1
21/68.9
1/8
5.3/17.4
9.2/30.2
9.9/32.5 10.6/34.8 12.7/41.7 14.8/48.6
1/16
3.8/12.5
6.5/21.3
7/23
7.5/24.6
9/29.5
10.5/34.4
1/32
2.7/8.9
4.6/15.1
4.9/16.1
5.3/17.4
6.4/21
7.4/24.3
1/64
1.9/6.2
3.3/10.8
3.5/11.5
3.8/12.5
4.5/14.8
5.3/17.4
1/128
1.3/4.3
2.3/7.5
2.5/8.2
2.7/8.9
3.2/10.5
3.7/12.1
Flash Output
Flash Coverage (mm)
70
80
105
135
200
1/1
50/164
53/173.9 58/190.3 59/193.6 60/196.9
1/2
35.4/116.1 37.5/123 41/134.5 41.7/136.8 42.4/139.1
1/4
25/82
26.5/86.9
29/95.1
29.5/96.8
30/98.4
1/8
17.7/58.1 18.7/61.4 20.5/67.3 20.9/68.6 21.2/69.6
1/16
12.5/41
13.3/43.6 14.5/47.6 14.8/48.6
15/49.2
1/32
8.8/28.9
9.4/30.8 10.3/33.8 10.4/34.1 10.6/34.8
1/64
6.3/20.7
6.6/21.7
7.3/24
7.4/24.3
7.5/24.6
1/128
4.4/14.4
4.7/15.4
5.1/16.7
5.2/17.1
5.3/17.4
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