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• AF-Assist Beam
Linkable AF points: 1 - 9 AF points (28mm or longer focal length)
Effective range (Approx.): At center: 0.7 - 10 m / 2.3 - 32.8 ft,
Periphery: 0.7 - 5 m / 2.3 - 16.4 ft
•Power Source
Internal power: Four size-AA alkaline
* Size-AA Ni-MH or lithium batteries also possible
Battery life
(Approx. flash count): 200 - 1400 flashes (with size-AA alkaline batteries)
Power saving: Power off after 90 sec. or idle operation (60 min. if set as
slave)
• Dimensions
(W x H x D): 72 x 122 x 101 mm / 2.8 x 4.8 x 4.0 in
•Weight: 330 g / 11.6 oz (Speedlite only, excluding batteries)
All specifications are based on Canon’s testing criteria.
Product specifications and external appearance are subject to change without
notice.
Manual Flash Guide No. (GNo.) (ISO 100, in meters/feet)
Flash Output
Flash Coverage (mm)
14 24 28 35 50 70 80 105
1/1
11/
36.1
25/
82
27/
88.6
31/
101.7
34/
111.5
37/
121.4
40/
131.2
43/
141.1
1/2
7.8/
25.6
17.7/
58.1
19.1/
62.7
21.9/
71.9
24/
78.7
26.2/
86
28.3/
92.8
30.4/
99.7
1/4
5.5/
18
12.5/
41
13.5/
44.3
15.5/
50.9
17/
55.8
18.5/
60.7
20/
65.6
21.5/
70.5
1/8
3.9/
12.8
8.8/
28.9
9.5/
31.2
11/
36.1
12/
39.4
13.1/
43
14.1/
46.3
15.2/
49.9
1/16
2.8/
9.2
6.3/
20.7
6.8/
22.3
7.8/
25.6
8.5/
27.9
9.3/
30.5
10/
32.8
10.8/
35.4
1/32
1.9/
6.2
4.4/
14.4
4.8/
15.7
5.5/
18
6/
19.7
6.5/
21.3
7.1/
23.3
7.6/
24.9
1/64
1.4/
4.6
3.1/
10.2
3.4/
11.2
3.9/
12.8
4.3/
14.1
4.6/
15.1
5/
16.4
5.4/
17.7
A52_E.book Page 34 Friday, June 10, 2005 4:40 PM