Canon 5246B002 Instruction Manual page 22

Flash Shooting Range Guidelines
When using EF-S 18-55mm f/3.5-5.6 IS [approx. m / ft.]
ISO
1 - 6.9 /
100
3.3 - 22.6
1 - 9.7 /
200
3.3 - 31.8
1 - 13.7 /
400
3.3 - 44.9
1.2 - 19.4 /
800
3.9 - 63.6
1.7 - 27.4 /
1600
5.6 - 89.9
2.4 - 38.8 /
3200
7.9 - 127.3
3.4 - 54.9 /
6400
11.2 - 180.1
4.8 - 77.6 /
12800
15.7 - 254.6
20
Normal Position
18mm
1 - 4.3 /
3.3 - 14.1
1 - 6.1 /
1 - 8.6 /
3.3 - 28.2
1 - 12.1 /
3.3 - 39.7
1 - 17.1 /
3.3 - 56.1
1.5 - 24.2 /
4.9 - 79.4
2.1 - 34.3 /
6.9 - 112.5
3 - 48.5 /
9.8 - 159.1
55mm
3.3 - 20
Extended Position
18mm
1 - 5.7 /
-
3.3 - 18.7
1 - 8.1 /
-
3.3 - 26.6
1 - 11.4 /
-
3.3 - 37.4
1 - 16.2 /
-
3.3 - 53.1
1 - 22.9 /
-
3.3 - 75.1
1.4 - 32.3 /
-
4.6 - 106
2 - 45.7 /
-
6.6 - 149.9
2.8 - 64.6 /
-
9.2 - 211.9
55mm